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Finding the Fourth Proportional to 1,318,696.43, 1,978,856.81 and 519,842.03

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Solution

The fourth proportional to 1,318,696.43, 1,978,856.81 and 519,842.03 is: 780,083.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,696.43 : 1,978,856.81 = 519,842.03 : x
  2. Step 2: Convert to fraction form
    1,318,696.43/1,978,856.81 = 519,842.03/x
  3. Step 3: Cross multiply
    1,318,696.43x = 1,978,856.81 × 519,842.03
  4. Step 4: Simplify right side
    1,318,696.43x = 1,028,692,938,590.51
  5. Step 5: Solve for x
    x = 1,028,692,938,590.51/1,318,696.43
  6. Step 6: Final answer
    x = 780,083.21

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