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Finding the Fourth Proportional to 719,258.31, 992,571.58 and 396,968.40

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Solution

The fourth proportional to 719,258.31, 992,571.58 and 396,968.40 is: 547,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,258.31 : 992,571.58 = 396,968.40 : x
  2. Step 2: Convert to fraction form
    719,258.31/992,571.58 = 396,968.40/x
  3. Step 3: Cross multiply
    719,258.31x = 992,571.58 × 396,968.40
  4. Step 4: Simplify right side
    719,258.31x = 394,019,552,494.28
  5. Step 5: Solve for x
    x = 394,019,552,494.28/719,258.31
  6. Step 6: Final answer
    x = 547,813.70

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