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Finding the Fourth Proportional to 482,691.38, 666,145.92 and 278,750.86

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Solution

The fourth proportional to 482,691.38, 666,145.92 and 278,750.86 is: 384,694.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,691.38 : 666,145.92 = 278,750.86 : x
  2. Step 2: Convert to fraction form
    482,691.38/666,145.92 = 278,750.86/x
  3. Step 3: Cross multiply
    482,691.38x = 666,145.92 × 278,750.86
  4. Step 4: Simplify right side
    482,691.38x = 185,688,747,465.44
  5. Step 5: Solve for x
    x = 185,688,747,465.44/482,691.38
  6. Step 6: Final answer
    x = 384,694.56

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1.5x scale

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.