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Finding the Fourth Proportional to 663,553.64, 915,704.46 and 361,747.64

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Solution

The fourth proportional to 663,553.64, 915,704.46 and 361,747.64 is: 499,211.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,553.64 : 915,704.46 = 361,747.64 : x
  2. Step 2: Convert to fraction form
    663,553.64/915,704.46 = 361,747.64/x
  3. Step 3: Cross multiply
    663,553.64x = 915,704.46 × 361,747.64
  4. Step 4: Simplify right side
    663,553.64x = 331,253,927,342.47
  5. Step 5: Solve for x
    x = 331,253,927,342.47/663,553.64
  6. Step 6: Final answer
    x = 499,211.98

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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.