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Finding the Fourth Proportional to 602,691.12, 904,620 and 443,257.20

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Solution

The fourth proportional to 602,691.12, 904,620 and 443,257.20 is: 665,314.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    602,691.12 : 904,620 = 443,257.20 : x
  2. Step 2: Convert to fraction form
    602,691.12/904,620 = 443,257.20/x
  3. Step 3: Cross multiply
    602,691.12x = 904,620 × 443,257.20
  4. Step 4: Simplify right side
    602,691.12x = 400,979,328,264
  5. Step 5: Solve for x
    x = 400,979,328,264/602,691.12
  6. Step 6: Final answer
    x = 665,314.81

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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.