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Finding the Fourth Proportional to 486,620.76, 671,439.24 and 271,727.76

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Solution

The fourth proportional to 486,620.76, 671,439.24 and 271,727.76 is: 374,929.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,620.76 : 671,439.24 = 271,727.76 : x
  2. Step 2: Convert to fraction form
    486,620.76/671,439.24 = 271,727.76/x
  3. Step 3: Cross multiply
    486,620.76x = 671,439.24 × 271,727.76
  4. Step 4: Simplify right side
    486,620.76x = 182,448,680,661.30
  5. Step 5: Solve for x
    x = 182,448,680,661.30/486,620.76
  6. Step 6: Final answer
    x = 374,929.92

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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.