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Finding the Fourth Proportional to 1,989,940.92, 2,984,619.76 and 978,791.48

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Solution

The fourth proportional to 1,989,940.92, 2,984,619.76 and 978,791.48 is: 1,468,043.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989,940.92 : 2,984,619.76 = 978,791.48 : x
  2. Step 2: Convert to fraction form
    1,989,940.92/2,984,619.76 = 978,791.48/x
  3. Step 3: Cross multiply
    1,989,940.92x = 2,984,619.76 × 978,791.48
  4. Step 4: Simplify right side
    1,989,940.92x = 2,921,320,392,127.64
  5. Step 5: Solve for x
    x = 2,921,320,392,127.64/1,989,940.92
  6. Step 6: Final answer
    x = 1,468,043.78

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