Home / 812,003.18-1,217,451.17-411,872.39

Finding the Fourth Proportional to 812,003.18, 1,217,451.17 and 411,872.39

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Solution

The fourth proportional to 812,003.18, 1,217,451.17 and 411,872.39 is: 617,527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,003.18 : 1,217,451.17 = 411,872.39 : x
  2. Step 2: Convert to fraction form
    812,003.18/1,217,451.17 = 411,872.39/x
  3. Step 3: Cross multiply
    812,003.18x = 1,217,451.17 × 411,872.39
  4. Step 4: Simplify right side
    812,003.18x = 501,434,517,008.94
  5. Step 5: Solve for x
    x = 501,434,517,008.94/812,003.18
  6. Step 6: Final answer
    x = 617,527.78

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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.