Home / 428,586.76-642,923.34-113,065.48

Finding the Fourth Proportional to 428,586.76, 642,923.34 and 113,065.48

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Solution

The fourth proportional to 428,586.76, 642,923.34 and 113,065.48 is: 169,609.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,586.76 : 642,923.34 = 113,065.48 : x
  2. Step 2: Convert to fraction form
    428,586.76/642,923.34 = 113,065.48/x
  3. Step 3: Cross multiply
    428,586.76x = 642,923.34 × 113,065.48
  4. Step 4: Simplify right side
    428,586.76x = 72,692,436,040.30
  5. Step 5: Solve for x
    x = 72,692,436,040.30/428,586.76
  6. Step 6: Final answer
    x = 169,609.62

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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.