Home / 726,500.55-1,002,555.11-420,589.88

Finding the Fourth Proportional to 726,500.55, 1,002,555.11 and 420,589.88

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Solution

The fourth proportional to 726,500.55, 1,002,555.11 and 420,589.88 is: 580,404.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,500.55 : 1,002,555.11 = 420,589.88 : x
  2. Step 2: Convert to fraction form
    726,500.55/1,002,555.11 = 420,589.88/x
  3. Step 3: Cross multiply
    726,500.55x = 1,002,555.11 × 420,589.88
  4. Step 4: Simplify right side
    726,500.55x = 421,664,526,292.56
  5. Step 5: Solve for x
    x = 421,664,526,292.56/726,500.55
  6. Step 6: Final answer
    x = 580,404.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.