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Finding the Fourth Proportional to 404,658.60, 606,987.90 and 387,381.30

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Solution

The fourth proportional to 404,658.60, 606,987.90 and 387,381.30 is: 581,071.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,658.60 : 606,987.90 = 387,381.30 : x
  2. Step 2: Convert to fraction form
    404,658.60/606,987.90 = 387,381.30/x
  3. Step 3: Cross multiply
    404,658.60x = 606,987.90 × 387,381.30
  4. Step 4: Simplify right side
    404,658.60x = 235,135,761,786.27
  5. Step 5: Solve for x
    x = 235,135,761,786.27/404,658.60
  6. Step 6: Final answer
    x = 581,071.95

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Similar ratio
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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.