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Finding the Fourth Proportional to 491,034.31, 677,620.67 and 276,174.32

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Solution

The fourth proportional to 491,034.31, 677,620.67 and 276,174.32 is: 381,116.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,034.31 : 677,620.67 = 276,174.32 : x
  2. Step 2: Convert to fraction form
    491,034.31/677,620.67 = 276,174.32/x
  3. Step 3: Cross multiply
    491,034.31x = 677,620.67 × 276,174.32
  4. Step 4: Simplify right side
    491,034.31x = 187,141,427,755.19
  5. Step 5: Solve for x
    x = 187,141,427,755.19/491,034.31
  6. Step 6: Final answer
    x = 381,116.81

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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.