Home / 724,874.20-1,087,311.30-647,459.80

Finding the Fourth Proportional to 724,874.20, 1,087,311.30 and 647,459.80

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Solution

The fourth proportional to 724,874.20, 1,087,311.30 and 647,459.80 is: 971,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,874.20 : 1,087,311.30 = 647,459.80 : x
  2. Step 2: Convert to fraction form
    724,874.20/1,087,311.30 = 647,459.80/x
  3. Step 3: Cross multiply
    724,874.20x = 1,087,311.30 × 647,459.80
  4. Step 4: Simplify right side
    724,874.20x = 703,990,356,835.74
  5. Step 5: Solve for x
    x = 703,990,356,835.74/724,874.20
  6. Step 6: Final answer
    x = 971,189.70

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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.