Home / 540,115.20-745,352.28-298,380.69

Finding the Fourth Proportional to 540,115.20, 745,352.28 and 298,380.69

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Solution

The fourth proportional to 540,115.20, 745,352.28 and 298,380.69 is: 411,761.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,115.20 : 745,352.28 = 298,380.69 : x
  2. Step 2: Convert to fraction form
    540,115.20/745,352.28 = 298,380.69/x
  3. Step 3: Cross multiply
    540,115.20x = 745,352.28 × 298,380.69
  4. Step 4: Simplify right side
    540,115.20x = 222,398,727,599.47
  5. Step 5: Solve for x
    x = 222,398,727,599.47/540,115.20
  6. Step 6: Final answer
    x = 411,761.65

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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.