Home / 498,042.80-687,331.54-283,202.85

Finding the Fourth Proportional to 498,042.80, 687,331.54 and 283,202.85

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Solution

The fourth proportional to 498,042.80, 687,331.54 and 283,202.85 is: 390,838.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,042.80 : 687,331.54 = 283,202.85 : x
  2. Step 2: Convert to fraction form
    498,042.80/687,331.54 = 283,202.85/x
  3. Step 3: Cross multiply
    498,042.80x = 687,331.54 × 283,202.85
  4. Step 4: Simplify right side
    498,042.80x = 194,654,251,022.89
  5. Step 5: Solve for x
    x = 194,654,251,022.89/498,042.80
  6. Step 6: Final answer
    x = 390,838.40

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.