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Finding the Fourth Proportional to 667,681.44, 921,370.32 and 365,868.96

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Solution

The fourth proportional to 667,681.44, 921,370.32 and 365,868.96 is: 504,882.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,681.44 : 921,370.32 = 365,868.96 : x
  2. Step 2: Convert to fraction form
    667,681.44/921,370.32 = 365,868.96/x
  3. Step 3: Cross multiply
    667,681.44x = 921,370.32 × 365,868.96
  4. Step 4: Simplify right side
    667,681.44x = 337,100,800,753.27
  5. Step 5: Solve for x
    x = 337,100,800,753.27/667,681.44
  6. Step 6: Final answer
    x = 504,882.69

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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.