Home / 667,731.11-921,469.74-361,807.25

Finding the Fourth Proportional to 667,731.11, 921,469.74 and 361,807.25

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Solution

The fourth proportional to 667,731.11, 921,469.74 and 361,807.25 is: 499,294.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,731.11 : 921,469.74 = 361,807.25 : x
  2. Step 2: Convert to fraction form
    667,731.11/921,469.74 = 361,807.25/x
  3. Step 3: Cross multiply
    667,731.11x = 921,469.74 × 361,807.25
  4. Step 4: Simplify right side
    667,731.11x = 333,394,432,587.62
  5. Step 5: Solve for x
    x = 333,394,432,587.62/667,731.11
  6. Step 6: Final answer
    x = 499,294.44

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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.