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Finding the Fourth Proportional to 978,791.80, 1,373,457.80 and 978,791.80

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Solution

The fourth proportional to 978,791.80, 1,373,457.80 and 978,791.80 is: 1,373,457.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,791.80 : 1,373,457.80 = 978,791.80 : x
  2. Step 2: Convert to fraction form
    978,791.80/1,373,457.80 = 978,791.80/x
  3. Step 3: Cross multiply
    978,791.80x = 1,373,457.80 × 978,791.80
  4. Step 4: Simplify right side
    978,791.80x = 1,344,329,232,286.04
  5. Step 5: Solve for x
    x = 1,344,329,232,286.04/978,791.80
  6. Step 6: Final answer
    x = 1,373,457.80

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