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Finding the Fourth Proportional to 718,403.67, 991,441.71 and 396,113.27

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Solution

The fourth proportional to 718,403.67, 991,441.71 and 396,113.27 is: 546,660.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,403.67 : 991,441.71 = 396,113.27 : x
  2. Step 2: Convert to fraction form
    718,403.67/991,441.71 = 396,113.27/x
  3. Step 3: Cross multiply
    718,403.67x = 991,441.71 × 396,113.27
  4. Step 4: Simplify right side
    718,403.67x = 392,723,212,805.28
  5. Step 5: Solve for x
    x = 392,723,212,805.28/718,403.67
  6. Step 6: Final answer
    x = 546,660.92

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