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Finding the Fourth Proportional to 486,560, 671,439.76 and 271,694.08

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Solution

The fourth proportional to 486,560, 671,439.76 and 271,694.08 is: 374,930.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,560 : 671,439.76 = 271,694.08 : x
  2. Step 2: Convert to fraction form
    486,560/671,439.76 = 271,694.08/x
  3. Step 3: Cross multiply
    486,560x = 671,439.76 × 271,694.08
  4. Step 4: Simplify right side
    486,560x = 182,426,207,868.62
  5. Step 5: Solve for x
    x = 182,426,207,868.62/486,560
  6. Step 6: Final answer
    x = 374,930.55

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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.