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Finding the Fourth Proportional to 667,476.72, 921,112.44 and 361,546.02

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Solution

The fourth proportional to 667,476.72, 921,112.44 and 361,546.02 is: 498,930.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,476.72 : 921,112.44 = 361,546.02 : x
  2. Step 2: Convert to fraction form
    667,476.72/921,112.44 = 361,546.02/x
  3. Step 3: Cross multiply
    667,476.72x = 921,112.44 × 361,546.02
  4. Step 4: Simplify right side
    667,476.72x = 333,024,536,654.49
  5. Step 5: Solve for x
    x = 333,024,536,654.49/667,476.72
  6. Step 6: Final answer
    x = 498,930.56

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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.