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Finding the Fourth Proportional to 491,797.38, 678,673.71 and 276,940.02

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Solution

The fourth proportional to 491,797.38, 678,673.71 and 276,940.02 is: 382,173.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,797.38 : 678,673.71 = 276,940.02 : x
  2. Step 2: Convert to fraction form
    491,797.38/678,673.71 = 276,940.02/x
  3. Step 3: Cross multiply
    491,797.38x = 678,673.71 × 276,940.02
  4. Step 4: Simplify right side
    491,797.38x = 187,951,910,820.87
  5. Step 5: Solve for x
    x = 187,951,910,820.87/491,797.38
  6. Step 6: Final answer
    x = 382,173.47

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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.