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Finding the Fourth Proportional to 469,475.12, 647,958.48 and 278,593.76

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Solution

The fourth proportional to 469,475.12, 647,958.48 and 278,593.76 is: 384,508.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,475.12 : 647,958.48 = 278,593.76 : x
  2. Step 2: Convert to fraction form
    469,475.12/647,958.48 = 278,593.76/x
  3. Step 3: Cross multiply
    469,475.12x = 647,958.48 × 278,593.76
  4. Step 4: Simplify right side
    469,475.12x = 180,517,189,267.09
  5. Step 5: Solve for x
    x = 180,517,189,267.09/469,475.12
  6. Step 6: Final answer
    x = 384,508.53

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