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Finding the Fourth Proportional to 724,704.60, 1,086,728.85 and 275,276.10

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Solution

The fourth proportional to 724,704.60, 1,086,728.85 and 275,276.10 is: 412,789.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,704.60 : 1,086,728.85 = 275,276.10 : x
  2. Step 2: Convert to fraction form
    724,704.60/1,086,728.85 = 275,276.10/x
  3. Step 3: Cross multiply
    724,704.60x = 1,086,728.85 × 275,276.10
  4. Step 4: Simplify right side
    724,704.60x = 299,150,479,585.49
  5. Step 5: Solve for x
    x = 299,150,479,585.49/724,704.60
  6. Step 6: Final answer
    x = 412,789.54

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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.