Finding the Fourth Proportional to 638,432.47, 881,042.70 and 351,962.79
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Solution
The fourth proportional to 638,432.47, 881,042.70 and 351,962.79 is: 485,711.90
Step by Step Solution
- Step 1: Write the proportion equation
638,432.47 : 881,042.70 = 351,962.79 : x - Step 2: Convert to fraction form
638,432.47/881,042.70 = 351,962.79/x - Step 3: Cross multiply
638,432.47x = 881,042.70 × 351,962.79 - Step 4: Simplify right side
638,432.47x = 310,094,246,801.13 - Step 5: Solve for x
x = 310,094,246,801.13/638,432.47 - Step 6: Final answer
x = 485,711.90
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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.