Home / 1,978,814.20-2,969,603.70-857,687.80

Finding the Fourth Proportional to 1,978,814.20, 2,969,603.70 and 857,687.80

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Solution

The fourth proportional to 1,978,814.20, 2,969,603.70 and 857,687.80 is: 1,287,130.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,814.20 : 2,969,603.70 = 857,687.80 : x
  2. Step 2: Convert to fraction form
    1,978,814.20/2,969,603.70 = 857,687.80/x
  3. Step 3: Cross multiply
    1,978,814.20x = 2,969,603.70 × 857,687.80
  4. Step 4: Simplify right side
    1,978,814.20x = 2,546,992,864,324.86
  5. Step 5: Solve for x
    x = 2,546,992,864,324.86/1,978,814.20
  6. Step 6: Final answer
    x = 1,287,130.88

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