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Finding the Fourth Proportional to 667,593.45, 921,277.89 and 361,677.62

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Solution

The fourth proportional to 667,593.45, 921,277.89 and 361,677.62 is: 499,114.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,593.45 : 921,277.89 = 361,677.62 : x
  2. Step 2: Convert to fraction form
    667,593.45/921,277.89 = 361,677.62/x
  3. Step 3: Cross multiply
    667,593.45x = 921,277.89 × 361,677.62
  4. Step 4: Simplify right side
    667,593.45x = 333,205,596,917.02
  5. Step 5: Solve for x
    x = 333,205,596,917.02/667,593.45
  6. Step 6: Final answer
    x = 499,114.54

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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.