Finding the Fourth Proportional to 922,752,138.60, 1,384,128,207.90 and 485,454,781.80
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Solution
The fourth proportional to 922,752,138.60, 1,384,128,207.90 and 485,454,781.80 is: 728,182,172.70
Step by Step Solution
- Step 1: Write the proportion equation
922,752,138.60 : 1,384,128,207.90 = 485,454,781.80 : x - Step 2: Convert to fraction form
922,752,138.60/1,384,128,207.90 = 485,454,781.80/x - Step 3: Cross multiply
922,752,138.60x = 1,384,128,207.90 × 485,454,781.80 - Step 4: Simplify right side
922,752,138.60x = 671,931,657,149,319,552 - Step 5: Solve for x
x = 671,931,657,149,319,552/922,752,138.60 - Step 6: Final answer
x = 728,182,172.70
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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.