Home / 809,691.45-1,215,277.92-410,607.69

Finding the Fourth Proportional to 809,691.45, 1,215,277.92 and 410,607.69

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Solution

The fourth proportional to 809,691.45, 1,215,277.92 and 410,607.69 is: 616,287.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,691.45 : 1,215,277.92 = 410,607.69 : x
  2. Step 2: Convert to fraction form
    809,691.45/1,215,277.92 = 410,607.69/x
  3. Step 3: Cross multiply
    809,691.45x = 1,215,277.92 × 410,607.69
  4. Step 4: Simplify right side
    809,691.45x = 499,002,459,439.21
  5. Step 5: Solve for x
    x = 499,002,459,439.21/809,691.45
  6. Step 6: Final answer
    x = 616,287.18

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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.