Home / 428,600.46-642,837.51-113,079.54

Finding the Fourth Proportional to 428,600.46, 642,837.51 and 113,079.54

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Solution

The fourth proportional to 428,600.46, 642,837.51 and 113,079.54 is: 169,602.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,600.46 : 642,837.51 = 113,079.54 : x
  2. Step 2: Convert to fraction form
    428,600.46/642,837.51 = 113,079.54/x
  3. Step 3: Cross multiply
    428,600.46x = 642,837.51 × 113,079.54
  4. Step 4: Simplify right side
    428,600.46x = 72,691,769,925.55
  5. Step 5: Solve for x
    x = 72,691,769,925.55/428,600.46
  6. Step 6: Final answer
    x = 169,602.64

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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.