Home / 739,979.70-1,109,969.55-341,398.95

Finding the Fourth Proportional to 739,979.70, 1,109,969.55 and 341,398.95

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Solution

The fourth proportional to 739,979.70, 1,109,969.55 and 341,398.95 is: 512,098.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,979.70 : 1,109,969.55 = 341,398.95 : x
  2. Step 2: Convert to fraction form
    739,979.70/1,109,969.55 = 341,398.95/x
  3. Step 3: Cross multiply
    739,979.70x = 1,109,969.55 × 341,398.95
  4. Step 4: Simplify right side
    739,979.70x = 378,942,438,901.97
  5. Step 5: Solve for x
    x = 378,942,438,901.97/739,979.70
  6. Step 6: Final answer
    x = 512,098.43

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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.