Home / 812,843.20-1,220,051.76-392,414.08

Finding the Fourth Proportional to 812,843.20, 1,220,051.76 and 392,414.08

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Solution

The fourth proportional to 812,843.20, 1,220,051.76 and 392,414.08 is: 589,001.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,843.20 : 1,220,051.76 = 392,414.08 : x
  2. Step 2: Convert to fraction form
    812,843.20/1,220,051.76 = 392,414.08/x
  3. Step 3: Cross multiply
    812,843.20x = 1,220,051.76 × 392,414.08
  4. Step 4: Simplify right side
    812,843.20x = 478,765,488,952.78
  5. Step 5: Solve for x
    x = 478,765,488,952.78/812,843.20
  6. Step 6: Final answer
    x = 589,001.04

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1.5x scale

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.