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Finding the Fourth Proportional to 870,718.90, 1,305,980.34 and 301,995.22

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Solution

The fourth proportional to 870,718.90, 1,305,980.34 and 301,995.22 is: 452,958.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,718.90 : 1,305,980.34 = 301,995.22 : x
  2. Step 2: Convert to fraction form
    870,718.90/1,305,980.34 = 301,995.22/x
  3. Step 3: Cross multiply
    870,718.90x = 1,305,980.34 × 301,995.22
  4. Step 4: Simplify right side
    870,718.90x = 394,399,820,093.98
  5. Step 5: Solve for x
    x = 394,399,820,093.98/870,718.90
  6. Step 6: Final answer
    x = 452,958.84

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