Finding the Fourth Proportional to 831,946,861.76, 1,149,282,538.64 and 664,463,230.56
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Solution
The fourth proportional to 831,946,861.76, 1,149,282,538.64 and 664,463,230.56 is: 917,914,380.78
Step by Step Solution
- Step 1: Write the proportion equation
831,946,861.76 : 1,149,282,538.64 = 664,463,230.56 : x - Step 2: Convert to fraction form
831,946,861.76/1,149,282,538.64 = 664,463,230.56/x - Step 3: Cross multiply
831,946,861.76x = 1,149,282,538.64 × 664,463,230.56 - Step 4: Simplify right side
831,946,861.76x = 763,655,988,450,932,480 - Step 5: Solve for x
x = 763,655,988,450,932,480/831,946,861.76 - Step 6: Final answer
x = 917,914,380.78
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.