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Finding the Fourth Proportional to 667,996.34, 921,893.28 and 366,248.66

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Solution

The fourth proportional to 667,996.34, 921,893.28 and 366,248.66 is: 505,455.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,996.34 : 921,893.28 = 366,248.66 : x
  2. Step 2: Convert to fraction form
    667,996.34/921,893.28 = 366,248.66/x
  3. Step 3: Cross multiply
    667,996.34x = 921,893.28 × 366,248.66
  4. Step 4: Simplify right side
    667,996.34x = 337,642,178,463.01
  5. Step 5: Solve for x
    x = 337,642,178,463.01/667,996.34
  6. Step 6: Final answer
    x = 505,455.13

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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.