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Finding the Fourth Proportional to 663,723.44, 915,957.24 and 361,934

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Solution

The fourth proportional to 663,723.44, 915,957.24 and 361,934 is: 499,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,723.44 : 915,957.24 = 361,934 : x
  2. Step 2: Convert to fraction form
    663,723.44/915,957.24 = 361,934/x
  3. Step 3: Cross multiply
    663,723.44x = 915,957.24 × 361,934
  4. Step 4: Simplify right side
    663,723.44x = 331,516,067,702.16
  5. Step 5: Solve for x
    x = 331,516,067,702.16/663,723.44
  6. Step 6: Final answer
    x = 499,479.22

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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.