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Finding the Fourth Proportional to 635,489.87, 876,972.48 and 345,098.64

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Solution

The fourth proportional to 635,489.87, 876,972.48 and 345,098.64 is: 476,234.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,489.87 : 876,972.48 = 345,098.64 : x
  2. Step 2: Convert to fraction form
    635,489.87/876,972.48 = 345,098.64/x
  3. Step 3: Cross multiply
    635,489.87x = 876,972.48 × 345,098.64
  4. Step 4: Simplify right side
    635,489.87x = 302,642,010,165.43
  5. Step 5: Solve for x
    x = 302,642,010,165.43/635,489.87
  6. Step 6: Final answer
    x = 476,234.20

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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.