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Finding the Fourth Proportional to 438,132.60, 657,198.90 and 416,481.30

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Solution

The fourth proportional to 438,132.60, 657,198.90 and 416,481.30 is: 624,721.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,132.60 : 657,198.90 = 416,481.30 : x
  2. Step 2: Convert to fraction form
    438,132.60/657,198.90 = 416,481.30/x
  3. Step 3: Cross multiply
    438,132.60x = 657,198.90 × 416,481.30
  4. Step 4: Simplify right side
    438,132.60x = 273,711,052,230.57
  5. Step 5: Solve for x
    x = 273,711,052,230.57/438,132.60
  6. Step 6: Final answer
    x = 624,721.95

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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.