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Finding the Fourth Proportional to 753,871.82, 1,040,314.56 and 431,611.88

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Solution

The fourth proportional to 753,871.82, 1,040,314.56 and 431,611.88 is: 595,608.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,871.82 : 1,040,314.56 = 431,611.88 : x
  2. Step 2: Convert to fraction form
    753,871.82/1,040,314.56 = 431,611.88/x
  3. Step 3: Cross multiply
    753,871.82x = 1,040,314.56 × 431,611.88
  4. Step 4: Simplify right side
    753,871.82x = 449,012,123,032.97
  5. Step 5: Solve for x
    x = 449,012,123,032.97/753,871.82
  6. Step 6: Final answer
    x = 595,608.05

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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.