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Finding the Fourth Proportional to 488,390.80, 732,586.20 and 440,179.60

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Solution

The fourth proportional to 488,390.80, 732,586.20 and 440,179.60 is: 660,269.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,390.80 : 732,586.20 = 440,179.60 : x
  2. Step 2: Convert to fraction form
    488,390.80/732,586.20 = 440,179.60/x
  3. Step 3: Cross multiply
    488,390.80x = 732,586.20 × 440,179.60
  4. Step 4: Simplify right side
    488,390.80x = 322,469,500,481.52
  5. Step 5: Solve for x
    x = 322,469,500,481.52/488,390.80
  6. Step 6: Final answer
    x = 660,269.40

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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.