Home / 724,964.20-1,087,446.30-659,645.80

Finding the Fourth Proportional to 724,964.20, 1,087,446.30 and 659,645.80

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Solution

The fourth proportional to 724,964.20, 1,087,446.30 and 659,645.80 is: 989,468.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,964.20 : 1,087,446.30 = 659,645.80 : x
  2. Step 2: Convert to fraction form
    724,964.20/1,087,446.30 = 659,645.80/x
  3. Step 3: Cross multiply
    724,964.20x = 1,087,446.30 × 659,645.80
  4. Step 4: Simplify right side
    724,964.20x = 717,329,384,520.54
  5. Step 5: Solve for x
    x = 717,329,384,520.54/724,964.20
  6. Step 6: Final answer
    x = 989,468.70

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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.