Home / 428,625.24-642,964.60-113,082.46

Finding the Fourth Proportional to 428,625.24, 642,964.60 and 113,082.46

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Solution

The fourth proportional to 428,625.24, 642,964.60 and 113,082.46 is: 169,630.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,625.24 : 642,964.60 = 113,082.46 : x
  2. Step 2: Convert to fraction form
    428,625.24/642,964.60 = 113,082.46/x
  3. Step 3: Cross multiply
    428,625.24x = 642,964.60 × 113,082.46
  4. Step 4: Simplify right side
    428,625.24x = 72,708,018,660.92
  5. Step 5: Solve for x
    x = 72,708,018,660.92/428,625.24
  6. Step 6: Final answer
    x = 169,630.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.