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Finding the Fourth Proportional to 664,238.80, 996,358.20 and 397,862.20

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Solution

The fourth proportional to 664,238.80, 996,358.20 and 397,862.20 is: 596,793.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,238.80 : 996,358.20 = 397,862.20 : x
  2. Step 2: Convert to fraction form
    664,238.80/996,358.20 = 397,862.20/x
  3. Step 3: Cross multiply
    664,238.80x = 996,358.20 × 397,862.20
  4. Step 4: Simplify right side
    664,238.80x = 396,413,265,440.04
  5. Step 5: Solve for x
    x = 396,413,265,440.04/664,238.80
  6. Step 6: Final answer
    x = 596,793.30

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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.