Home / 728,100.28-1,092,642.50-254,789.74

Finding the Fourth Proportional to 728,100.28, 1,092,642.50 and 254,789.74

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Solution

The fourth proportional to 728,100.28, 1,092,642.50 and 254,789.74 is: 382,356.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,100.28 : 1,092,642.50 = 254,789.74 : x
  2. Step 2: Convert to fraction form
    728,100.28/1,092,642.50 = 254,789.74/x
  3. Step 3: Cross multiply
    728,100.28x = 1,092,642.50 × 254,789.74
  4. Step 4: Simplify right side
    728,100.28x = 278,394,098,487.95
  5. Step 5: Solve for x
    x = 278,394,098,487.95/728,100.28
  6. Step 6: Final answer
    x = 382,356.81

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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.