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Finding the Fourth Proportional to 1,978,652.80, 2,967,979.20 and 1,180,835.20

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Solution

The fourth proportional to 1,978,652.80, 2,967,979.20 and 1,180,835.20 is: 1,771,252.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,652.80 : 2,967,979.20 = 1,180,835.20 : x
  2. Step 2: Convert to fraction form
    1,978,652.80/2,967,979.20 = 1,180,835.20/x
  3. Step 3: Cross multiply
    1,978,652.80x = 2,967,979.20 × 1,180,835.20
  4. Step 4: Simplify right side
    1,978,652.80x = 3,504,694,312,227.84
  5. Step 5: Solve for x
    x = 3,504,694,312,227.84/1,978,652.80
  6. Step 6: Final answer
    x = 1,771,252.80

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