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Finding the Fourth Proportional to 414,789.40, 622,840.20 and 315,062.20

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Solution

The fourth proportional to 414,789.40, 622,840.20 and 315,062.20 is: 473,091.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,789.40 : 622,840.20 = 315,062.20 : x
  2. Step 2: Convert to fraction form
    414,789.40/622,840.20 = 315,062.20/x
  3. Step 3: Cross multiply
    414,789.40x = 622,840.20 × 315,062.20
  4. Step 4: Simplify right side
    414,789.40x = 196,233,403,660.44
  5. Step 5: Solve for x
    x = 196,233,403,660.44/414,789.40
  6. Step 6: Final answer
    x = 473,091.65

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