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Finding the Fourth Proportional to 667,997.13, 921,894.35 and 366,249.45

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Solution

The fourth proportional to 667,997.13, 921,894.35 and 366,249.45 is: 505,456.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,997.13 : 921,894.35 = 366,249.45 : x
  2. Step 2: Convert to fraction form
    667,997.13/921,894.35 = 366,249.45/x
  3. Step 3: Cross multiply
    667,997.13x = 921,894.35 × 366,249.45
  4. Step 4: Simplify right side
    667,997.13x = 337,643,294,951.76
  5. Step 5: Solve for x
    x = 337,643,294,951.76/667,997.13
  6. Step 6: Final answer
    x = 505,456.21

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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.