Home / 428,626.24-642,966.10-113,083.46

Finding the Fourth Proportional to 428,626.24, 642,966.10 and 113,083.46

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Solution

The fourth proportional to 428,626.24, 642,966.10 and 113,083.46 is: 169,632.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,626.24 : 642,966.10 = 113,083.46 : x
  2. Step 2: Convert to fraction form
    428,626.24/642,966.10 = 113,083.46/x
  3. Step 3: Cross multiply
    428,626.24x = 642,966.10 × 113,083.46
  4. Step 4: Simplify right side
    428,626.24x = 72,708,831,250.71
  5. Step 5: Solve for x
    x = 72,708,831,250.71/428,626.24
  6. Step 6: Final answer
    x = 169,632.24

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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.