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Finding the Fourth Proportional to 491,612.04, 678,489.28 and 276,793.97

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Solution

The fourth proportional to 491,612.04, 678,489.28 and 276,793.97 is: 382,012.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,612.04 : 678,489.28 = 276,793.97 : x
  2. Step 2: Convert to fraction form
    491,612.04/678,489.28 = 276,793.97/x
  3. Step 3: Cross multiply
    491,612.04x = 678,489.28 × 276,793.97
  4. Step 4: Simplify right side
    491,612.04x = 187,801,737,329.21
  5. Step 5: Solve for x
    x = 187,801,737,329.21/491,612.04
  6. Step 6: Final answer
    x = 382,012.08

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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.