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Finding the Fourth Proportional to 978,721.80, 1,465,749.90 and 978,721.80

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Solution

The fourth proportional to 978,721.80, 1,465,749.90 and 978,721.80 is: 1,465,749.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,721.80 : 1,465,749.90 = 978,721.80 : x
  2. Step 2: Convert to fraction form
    978,721.80/1,465,749.90 = 978,721.80/x
  3. Step 3: Cross multiply
    978,721.80x = 1,465,749.90 × 978,721.80
  4. Step 4: Simplify right side
    978,721.80x = 1,434,561,380,477.82
  5. Step 5: Solve for x
    x = 1,434,561,380,477.82/978,721.80
  6. Step 6: Final answer
    x = 1,465,749.90

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