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Finding the Fourth Proportional to 1,986,941.70, 2,978,615.34 and 724,474.08

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Solution

The fourth proportional to 1,986,941.70, 2,978,615.34 and 724,474.08 is: 1,086,055.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,941.70 : 2,978,615.34 = 724,474.08 : x
  2. Step 2: Convert to fraction form
    1,986,941.70/2,978,615.34 = 724,474.08/x
  3. Step 3: Cross multiply
    1,986,941.70x = 2,978,615.34 × 724,474.08
  4. Step 4: Simplify right side
    1,986,941.70x = 2,157,929,608,120.39
  5. Step 5: Solve for x
    x = 2,157,929,608,120.39/1,986,941.70
  6. Step 6: Final answer
    x = 1,086,055.83

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