The highest Page Ranks found on G+ pages

 as you can see, just like with the personal profiles in the linked post, the number of followers doesn´t determine the page rank.

+World Health Organization 9301 8
+edX 44266 8
+UNESCO 192743 8
+Google Enterprise 263413 8
+Google Analytics 650119 8
+United Nations 849269 8
+The Wall Street Journal 1370986 8
+The White House 1442323 8
+Google 1715231 8
+Google Chrome 1777938 8
+CBS 7491 7
+DRadio Wissen 8683 7
+Google Norway AS 9068 7
+foursquare 9543 7
+Business Insider 13135 7
+Stanford University 15172 7
+Ministère des Affaires étrangères 15229 7
+Art Gallery of NSW 20032 7
+World Bank 25489 7
+The Atlantic 32192 7
+CBS News 32929 7
+University of Pennsylvania 36431 7
+Cornell University 38377 7
+Berkeley Lab 47513 7
+Duke University 50731 7
+Google Chrome Developers 56358 7
+DARPA 64253 7
+U.S. Department of State 68005 7
+Scoop.it 75990 7
+Google Australia 81051 7
+UNAIDS 85618 7
+Scientific American 107686 7
+Google Japan 128321 7
+Sky News 139924 7
+The New Yorker 153338 7
+Daily Mail 154061 7
+Google France 160374 7
+Bloomberg News 164455 7
+Harvard University 167336 7
+Google Thailand 192506 7
+Google Italia 197278 7
+Massachusetts Institute of Technology (MIT) 204073 7
+Google Offers 212602 7
+Google Developers 228564 7
+Google AdSense 289498 7
+Google Россия 325362 7
+European Commission 329667 7
+Google Earth 422344 7
+Blogger 435393 7
+Google Science Fair 445794 7
+The Independent 463785 7
+Google+ Your Business 489628 7
+CNNMoney 565021 7
+Google Drive 607959 7
+Google Students 640330 7
+ABC News 677922 7
+Smithsonian Magazine 687979 7
+The New York Times 734501 7
+Google Play 1309363 7
+Mashable 1343402 7
+Google+ 1851114 7
+TIME 2552099 7
+Barack Obama 2744337 7
+The Economist 2768279 7
+Android 2949999 7
+YouTube 3139558 7
+Google Art Project 3553359 7

It´s up to the reader to come up with a sensible explanation why these pages rank so high.