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Finding the Fourth Proportional to 1,978,848.60, 2,969,439.30 and 1,306,872.60

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Solution

The fourth proportional to 1,978,848.60, 2,969,439.30 and 1,306,872.60 is: 1,961,079.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,978,848.60 : 2,969,439.30 = 1,306,872.60 : x
  2. Step 2: Convert to fraction form
    1,978,848.60/2,969,439.30 = 1,306,872.60/x
  3. Step 3: Cross multiply
    1,978,848.60x = 2,969,439.30 × 1,306,872.60
  4. Step 4: Simplify right side
    1,978,848.60x = 3,880,678,858,533.18
  5. Step 5: Solve for x
    x = 3,880,678,858,533.18/1,978,848.60
  6. Step 6: Final answer
    x = 1,961,079.21

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