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Finding the Fourth Proportional to 498,000.76, 687,243.22 and 271,651.12

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Solution

The fourth proportional to 498,000.76, 687,243.22 and 271,651.12 is: 374,879.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,000.76 : 687,243.22 = 271,651.12 : x
  2. Step 2: Convert to fraction form
    498,000.76/687,243.22 = 271,651.12/x
  3. Step 3: Cross multiply
    498,000.76x = 687,243.22 × 271,651.12
  4. Step 4: Simplify right side
    498,000.76x = 186,690,388,028.17
  5. Step 5: Solve for x
    x = 186,690,388,028.17/498,000.76
  6. Step 6: Final answer
    x = 374,879.73

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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.