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Finding the Fourth Proportional to 678,654.59, 936,543.15 and 372,731.04

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Solution

The fourth proportional to 678,654.59, 936,543.15 and 372,731.04 is: 514,368.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,654.59 : 936,543.15 = 372,731.04 : x
  2. Step 2: Convert to fraction form
    678,654.59/936,543.15 = 372,731.04/x
  3. Step 3: Cross multiply
    678,654.59x = 936,543.15 × 372,731.04
  4. Step 4: Simplify right side
    678,654.59x = 349,078,702,304.38
  5. Step 5: Solve for x
    x = 349,078,702,304.38/678,654.59
  6. Step 6: Final answer
    x = 514,368.74

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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.