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Finding the Fourth Proportional to 439,545.60, 659,318.40 and 408,052.80

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Solution

The fourth proportional to 439,545.60, 659,318.40 and 408,052.80 is: 612,079.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,545.60 : 659,318.40 = 408,052.80 : x
  2. Step 2: Convert to fraction form
    439,545.60/659,318.40 = 408,052.80/x
  3. Step 3: Cross multiply
    439,545.60x = 659,318.40 × 408,052.80
  4. Step 4: Simplify right side
    439,545.60x = 269,036,719,211.52
  5. Step 5: Solve for x
    x = 269,036,719,211.52/439,545.60
  6. Step 6: Final answer
    x = 612,079.20

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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.