Home / 812,872.92-1,219,348.26-392,502.36

Finding the Fourth Proportional to 812,872.92, 1,219,348.26 and 392,502.36

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Solution

The fourth proportional to 812,872.92, 1,219,348.26 and 392,502.36 is: 588,772.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,872.92 : 1,219,348.26 = 392,502.36 : x
  2. Step 2: Convert to fraction form
    812,872.92/1,219,348.26 = 392,502.36/x
  3. Step 3: Cross multiply
    812,872.92x = 1,219,348.26 × 392,502.36
  4. Step 4: Simplify right side
    812,872.92x = 478,597,069,711.89
  5. Step 5: Solve for x
    x = 478,597,069,711.89/812,872.92
  6. Step 6: Final answer
    x = 588,772.31

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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.