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Finding the Fourth Proportional to 482,600.38, 666,020.07 and 278,659.89

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Solution

The fourth proportional to 482,600.38, 666,020.07 and 278,659.89 is: 384,568.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,600.38 : 666,020.07 = 278,659.89 : x
  2. Step 2: Convert to fraction form
    482,600.38/666,020.07 = 278,659.89/x
  3. Step 3: Cross multiply
    482,600.38x = 666,020.07 × 278,659.89
  4. Step 4: Simplify right side
    482,600.38x = 185,593,079,443.99
  5. Step 5: Solve for x
    x = 185,593,079,443.99/482,600.38
  6. Step 6: Final answer
    x = 384,568.87

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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.