Home / 381,983.29-526,469.68-279,791.61

Finding the Fourth Proportional to 381,983.29, 526,469.68 and 279,791.61

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Solution

The fourth proportional to 381,983.29, 526,469.68 and 279,791.61 is: 385,623.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,983.29 : 526,469.68 = 279,791.61 : x
  2. Step 2: Convert to fraction form
    381,983.29/526,469.68 = 279,791.61/x
  3. Step 3: Cross multiply
    381,983.29x = 526,469.68 × 279,791.61
  4. Step 4: Simplify right side
    381,983.29x = 147,301,799,383.39
  5. Step 5: Solve for x
    x = 147,301,799,383.39/381,983.29
  6. Step 6: Final answer
    x = 385,623.68

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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.