1. The problem statement, all variables and given/known data The sum of the first six terms in a geometric sequence of real numbers is 252. Find the sum of the first four terms when the sum of the first two terms is 12. 2. Relevant equations Sn = A1 - A1Rn divided by 1 - R R [tex]\neq 1[/tex] (I cant figured out how to make the "divided by" sign) 3. The attempt at a solution Well, I subtracted 12 from 252 to find the sum of the last 4 terms and got 240. I could think of nothing more to do after this though.