Finding the Fourth Proportional to 721,170,087.20, 1,081,755,130.80 and 449,072,295.20
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Solution
The fourth proportional to 721,170,087.20, 1,081,755,130.80 and 449,072,295.20 is: 673,608,442.80
Step by Step Solution
- Step 1: Write the proportion equation
721,170,087.20 : 1,081,755,130.80 = 449,072,295.20 : x - Step 2: Convert to fraction form
721,170,087.20/1,081,755,130.80 = 449,072,295.20/x - Step 3: Cross multiply
721,170,087.20x = 1,081,755,130.80 × 449,072,295.20 - Step 4: Simplify right side
721,170,087.20x = 485,786,259,432,732,160 - Step 5: Solve for x
x = 485,786,259,432,732,160/721,170,087.20 - Step 6: Final answer
x = 673,608,442.80
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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.