Finding the Fourth Proportional to 729,071,948.52, 1,006,121,829.36 and 394,544,387.12
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Solution
The fourth proportional to 729,071,948.52, 1,006,121,829.36 and 394,544,387.12 is: 544,472,628.99
Step by Step Solution
- Step 1: Write the proportion equation
729,071,948.52 : 1,006,121,829.36 = 394,544,387.12 : x - Step 2: Convert to fraction form
729,071,948.52/1,006,121,829.36 = 394,544,387.12/x - Step 3: Cross multiply
729,071,948.52x = 1,006,121,829.36 × 394,544,387.12 - Step 4: Simplify right side
729,071,948.52x = 396,959,720,532,894,464 - Step 5: Solve for x
x = 396,959,720,532,894,464/729,071,948.52 - Step 6: Final answer
x = 544,472,628.99
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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.