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Finding the Fourth Proportional to 664,325.20, 996,487.80 and 658,104.40

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Solution

The fourth proportional to 664,325.20, 996,487.80 and 658,104.40 is: 987,156.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,325.20 : 996,487.80 = 658,104.40 : x
  2. Step 2: Convert to fraction form
    664,325.20/996,487.80 = 658,104.40/x
  3. Step 3: Cross multiply
    664,325.20x = 996,487.80 × 658,104.40
  4. Step 4: Simplify right side
    664,325.20x = 655,793,005,726.32
  5. Step 5: Solve for x
    x = 655,793,005,726.32/664,325.20
  6. Step 6: Final answer
    x = 987,156.60

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Similar ratio
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1.5x scale

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.