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Finding the Fourth Proportional to 667,893.04, 921,738.51 and 406,350.41

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Solution

The fourth proportional to 667,893.04, 921,738.51 and 406,350.41 is: 560,791.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,893.04 : 921,738.51 = 406,350.41 : x
  2. Step 2: Convert to fraction form
    667,893.04/921,738.51 = 406,350.41/x
  3. Step 3: Cross multiply
    667,893.04x = 921,738.51 × 406,350.41
  4. Step 4: Simplify right side
    667,893.04x = 374,548,816,842.60
  5. Step 5: Solve for x
    x = 374,548,816,842.60/667,893.04
  6. Step 6: Final answer
    x = 560,791.62

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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.