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Finding the Fourth Proportional to 1,321,042.44, 1,978,199.76 and 870,397.08

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Solution

The fourth proportional to 1,321,042.44, 1,978,199.76 and 870,397.08 is: 1,303,379.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,042.44 : 1,978,199.76 = 870,397.08 : x
  2. Step 2: Convert to fraction form
    1,321,042.44/1,978,199.76 = 870,397.08/x
  3. Step 3: Cross multiply
    1,321,042.44x = 1,978,199.76 × 870,397.08
  4. Step 4: Simplify right side
    1,321,042.44x = 1,721,819,294,760.70
  5. Step 5: Solve for x
    x = 1,721,819,294,760.70/1,321,042.44
  6. Step 6: Final answer
    x = 1,303,379.24

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