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Finding the Fourth Proportional to 491,794.38, 678,669.57 and 276,937.02

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Solution

The fourth proportional to 491,794.38, 678,669.57 and 276,937.02 is: 382,169.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,794.38 : 678,669.57 = 276,937.02 : x
  2. Step 2: Convert to fraction form
    491,794.38/678,669.57 = 276,937.02/x
  3. Step 3: Cross multiply
    491,794.38x = 678,669.57 × 276,937.02
  4. Step 4: Simplify right side
    491,794.38x = 187,948,728,280.48
  5. Step 5: Solve for x
    x = 187,948,728,280.48/491,794.38
  6. Step 6: Final answer
    x = 382,169.33

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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.