Finding the Fourth Proportional to 990,577,488.80, 1,485,866,233.20 and 560,595,792.80
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Solution
The fourth proportional to 990,577,488.80, 1,485,866,233.20 and 560,595,792.80 is: 840,893,689.20
Step by Step Solution
- Step 1: Write the proportion equation
990,577,488.80 : 1,485,866,233.20 = 560,595,792.80 : x - Step 2: Convert to fraction form
990,577,488.80/1,485,866,233.20 = 560,595,792.80/x - Step 3: Cross multiply
990,577,488.80x = 1,485,866,233.20 × 560,595,792.80 - Step 4: Simplify right side
990,577,488.80x = 832,970,358,995,503,616 - Step 5: Solve for x
x = 832,970,358,995,503,616/990,577,488.80 - Step 6: Final answer
x = 840,893,689.20
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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.