Home / 724,406.72-1,087,747.38-613,540.40

Finding the Fourth Proportional to 724,406.72, 1,087,747.38 and 613,540.40

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Solution

The fourth proportional to 724,406.72, 1,087,747.38 and 613,540.40 is: 921,273.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,406.72 : 1,087,747.38 = 613,540.40 : x
  2. Step 2: Convert to fraction form
    724,406.72/1,087,747.38 = 613,540.40/x
  3. Step 3: Cross multiply
    724,406.72x = 1,087,747.38 × 613,540.40
  4. Step 4: Simplify right side
    724,406.72x = 667,376,962,624.15
  5. Step 5: Solve for x
    x = 667,376,962,624.15/724,406.72
  6. Step 6: Final answer
    x = 921,273.84

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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.