Home / 728,123.92-1,092,184.92-338,591.68

Finding the Fourth Proportional to 728,123.92, 1,092,184.92 and 338,591.68

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Solution

The fourth proportional to 728,123.92, 1,092,184.92 and 338,591.68 is: 507,887.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,123.92 : 1,092,184.92 = 338,591.68 : x
  2. Step 2: Convert to fraction form
    728,123.92/1,092,184.92 = 338,591.68/x
  3. Step 3: Cross multiply
    728,123.92x = 1,092,184.92 × 338,591.68
  4. Step 4: Simplify right side
    728,123.92x = 369,804,726,933.47
  5. Step 5: Solve for x
    x = 369,804,726,933.47/728,123.92
  6. Step 6: Final answer
    x = 507,887.07

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Double scale
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Similar ratio
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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.