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Finding the Fourth Proportional to 574,429.70, 861,644.55 and 455,456.90

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Solution

The fourth proportional to 574,429.70, 861,644.55 and 455,456.90 is: 683,185.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,429.70 : 861,644.55 = 455,456.90 : x
  2. Step 2: Convert to fraction form
    574,429.70/861,644.55 = 455,456.90/x
  3. Step 3: Cross multiply
    574,429.70x = 861,644.55 × 455,456.90
  4. Step 4: Simplify right side
    574,429.70x = 392,441,955,644.90
  5. Step 5: Solve for x
    x = 392,441,955,644.90/574,429.70
  6. Step 6: Final answer
    x = 683,185.35

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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.