Home / 912,906.40-1,369,359.60-487,753.60

Finding the Fourth Proportional to 912,906.40, 1,369,359.60 and 487,753.60

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Solution

The fourth proportional to 912,906.40, 1,369,359.60 and 487,753.60 is: 731,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,906.40 : 1,369,359.60 = 487,753.60 : x
  2. Step 2: Convert to fraction form
    912,906.40/1,369,359.60 = 487,753.60/x
  3. Step 3: Cross multiply
    912,906.40x = 1,369,359.60 × 487,753.60
  4. Step 4: Simplify right side
    912,906.40x = 667,910,074,594.56
  5. Step 5: Solve for x
    x = 667,910,074,594.56/912,906.40
  6. Step 6: Final answer
    x = 731,630.40

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Double scale
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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.