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Finding the Fourth Proportional to 667,392.82, 920,997.33 and 361,462.15

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Solution

The fourth proportional to 667,392.82, 920,997.33 and 361,462.15 is: 498,815.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,392.82 : 920,997.33 = 361,462.15 : x
  2. Step 2: Convert to fraction form
    667,392.82/920,997.33 = 361,462.15/x
  3. Step 3: Cross multiply
    667,392.82x = 920,997.33 × 361,462.15
  4. Step 4: Simplify right side
    667,392.82x = 332,905,675,046.06
  5. Step 5: Solve for x
    x = 332,905,675,046.06/667,392.82
  6. Step 6: Final answer
    x = 498,815.19

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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.