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Finding the Fourth Proportional to 1,978,214.40, 2,969,071.20 and 1,694,779.20

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Solution

The fourth proportional to 1,978,214.40, 2,969,071.20 and 1,694,779.20 is: 2,543,667.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,214.40 : 2,969,071.20 = 1,694,779.20 : x
  2. Step 2: Convert to fraction form
    1,978,214.40/2,969,071.20 = 1,694,779.20/x
  3. Step 3: Cross multiply
    1,978,214.40x = 2,969,071.20 × 1,694,779.20
  4. Step 4: Simplify right side
    1,978,214.40x = 5,031,920,113,079.04
  5. Step 5: Solve for x
    x = 5,031,920,113,079.04/1,978,214.40
  6. Step 6: Final answer
    x = 2,543,667.72

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