Home / 428,665.46-642,935.01-113,144.54

Finding the Fourth Proportional to 428,665.46, 642,935.01 and 113,144.54

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Solution

The fourth proportional to 428,665.46, 642,935.01 and 113,144.54 is: 169,700.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,665.46 : 642,935.01 = 113,144.54 : x
  2. Step 2: Convert to fraction form
    428,665.46/642,935.01 = 113,144.54/x
  3. Step 3: Cross multiply
    428,665.46x = 642,935.01 × 113,144.54
  4. Step 4: Simplify right side
    428,665.46x = 72,744,585,956.35
  5. Step 5: Solve for x
    x = 72,744,585,956.35/428,665.46
  6. Step 6: Final answer
    x = 169,700.13

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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.