Finding the Fourth Proportional to 746,496,901.80, 1,119,745,352.70 and 687,374,418.60
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Solution
The fourth proportional to 746,496,901.80, 1,119,745,352.70 and 687,374,418.60 is: 1,031,061,627.90
Step by Step Solution
- Step 1: Write the proportion equation
746,496,901.80 : 1,119,745,352.70 = 687,374,418.60 : x - Step 2: Convert to fraction form
746,496,901.80/1,119,745,352.70 = 687,374,418.60/x - Step 3: Cross multiply
746,496,901.80x = 1,119,745,352.70 × 687,374,418.60 - Step 4: Simplify right side
746,496,901.80x = 769,684,310,792,214,528 - Step 5: Solve for x
x = 769,684,310,792,214,528/746,496,901.80 - Step 6: Final answer
x = 1,031,061,627.90
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.