Home / 491,246.17-677,912.78-276,385.72

Finding the Fourth Proportional to 491,246.17, 677,912.78 and 276,385.72

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Solution

The fourth proportional to 491,246.17, 677,912.78 and 276,385.72 is: 381,408.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,246.17 : 677,912.78 = 276,385.72 : x
  2. Step 2: Convert to fraction form
    491,246.17/677,912.78 = 276,385.72/x
  3. Step 3: Cross multiply
    491,246.17x = 677,912.78 × 276,385.72
  4. Step 4: Simplify right side
    491,246.17x = 187,365,410,510.10
  5. Step 5: Solve for x
    x = 187,365,410,510.10/491,246.17
  6. Step 6: Final answer
    x = 381,408.39

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Double scale
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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.