Home / 668,780.75-1,002,960.38-219,396.89

Finding the Fourth Proportional to 668,780.75, 1,002,960.38 and 219,396.89

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Solution

The fourth proportional to 668,780.75, 1,002,960.38 and 219,396.89 is: 329,026.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,780.75 : 1,002,960.38 = 219,396.89 : x
  2. Step 2: Convert to fraction form
    668,780.75/1,002,960.38 = 219,396.89/x
  3. Step 3: Cross multiply
    668,780.75x = 1,002,960.38 × 219,396.89
  4. Step 4: Simplify right side
    668,780.75x = 220,046,391,221.11
  5. Step 5: Solve for x
    x = 220,046,391,221.11/668,780.75
  6. Step 6: Final answer
    x = 329,026.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.