Home / 812,761.20-1,218,551.16-339,581.88

Finding the Fourth Proportional to 812,761.20, 1,218,551.16 and 339,581.88

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Solution

The fourth proportional to 812,761.20, 1,218,551.16 and 339,581.88 is: 509,126.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,761.20 : 1,218,551.16 = 339,581.88 : x
  2. Step 2: Convert to fraction form
    812,761.20/1,218,551.16 = 339,581.88/x
  3. Step 3: Cross multiply
    812,761.20x = 1,218,551.16 × 339,581.88
  4. Step 4: Simplify right side
    812,761.20x = 413,797,893,788.98
  5. Step 5: Solve for x
    x = 413,797,893,788.98/812,761.20
  6. Step 6: Final answer
    x = 509,126.04

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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.