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Finding the Fourth Proportional to 491,470.39, 678,250.97 and 276,624.37

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Solution

The fourth proportional to 491,470.39, 678,250.97 and 276,624.37 is: 381,753.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,470.39 : 678,250.97 = 276,624.37 : x
  2. Step 2: Convert to fraction form
    491,470.39/678,250.97 = 276,624.37/x
  3. Step 3: Cross multiply
    491,470.39x = 678,250.97 × 276,624.37
  4. Step 4: Simplify right side
    491,470.39x = 187,620,747,278.14
  5. Step 5: Solve for x
    x = 187,620,747,278.14/491,470.39
  6. Step 6: Final answer
    x = 381,753.92

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1.5x scale

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.