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Finding the Fourth Proportional to 1,318,695.68, 1,978,855.68 and 519,841.28

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Solution

The fourth proportional to 1,318,695.68, 1,978,855.68 and 519,841.28 is: 780,082.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,695.68 : 1,978,855.68 = 519,841.28 : x
  2. Step 2: Convert to fraction form
    1,318,695.68/1,978,855.68 = 519,841.28/x
  3. Step 3: Cross multiply
    1,318,695.68x = 1,978,855.68 × 519,841.28
  4. Step 4: Simplify right side
    1,318,695.68x = 1,028,690,869,626.47
  5. Step 5: Solve for x
    x = 1,028,690,869,626.47/1,318,695.68
  6. Step 6: Final answer
    x = 780,082.08

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