Home / 428,630.49-642,896.46-113,112

Finding the Fourth Proportional to 428,630.49, 642,896.46 and 113,112

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Solution

The fourth proportional to 428,630.49, 642,896.46 and 113,112 is: 169,655.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,630.49 : 642,896.46 = 113,112 : x
  2. Step 2: Convert to fraction form
    428,630.49/642,896.46 = 113,112/x
  3. Step 3: Cross multiply
    428,630.49x = 642,896.46 × 113,112
  4. Step 4: Simplify right side
    428,630.49x = 72,719,304,383.52
  5. Step 5: Solve for x
    x = 72,719,304,383.52/428,630.49
  6. Step 6: Final answer
    x = 169,655.00

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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.