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Finding the Fourth Proportional to 667,685.44, 921,375.84 and 365,872.96

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Solution

The fourth proportional to 667,685.44, 921,375.84 and 365,872.96 is: 504,888.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,685.44 : 921,375.84 = 365,872.96 : x
  2. Step 2: Convert to fraction form
    667,685.44/921,375.84 = 365,872.96/x
  3. Step 3: Cross multiply
    667,685.44x = 921,375.84 × 365,872.96
  4. Step 4: Simplify right side
    667,685.44x = 337,106,505,853.29
  5. Step 5: Solve for x
    x = 337,106,505,853.29/667,685.44
  6. Step 6: Final answer
    x = 504,888.21

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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.