Home / 391,849.28-539,792.16-284,102.72

Finding the Fourth Proportional to 391,849.28, 539,792.16 and 284,102.72

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Solution

The fourth proportional to 391,849.28, 539,792.16 and 284,102.72 is: 391,365.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,849.28 : 539,792.16 = 284,102.72 : x
  2. Step 2: Convert to fraction form
    391,849.28/539,792.16 = 284,102.72/x
  3. Step 3: Cross multiply
    391,849.28x = 539,792.16 × 284,102.72
  4. Step 4: Simplify right side
    391,849.28x = 153,356,420,890.68
  5. Step 5: Solve for x
    x = 153,356,420,890.68/391,849.28
  6. Step 6: Final answer
    x = 391,365.84

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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.