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Finding the Fourth Proportional to 646,978.60, 970,647.92 and 282,272.10

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Solution

The fourth proportional to 646,978.60, 970,647.92 and 282,272.10 is: 423,486.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,978.60 : 970,647.92 = 282,272.10 : x
  2. Step 2: Convert to fraction form
    646,978.60/970,647.92 = 282,272.10/x
  3. Step 3: Cross multiply
    646,978.60x = 970,647.92 × 282,272.10
  4. Step 4: Simplify right side
    646,978.60x = 273,986,826,739.03
  5. Step 5: Solve for x
    x = 273,986,826,739.03/646,978.60
  6. Step 6: Final answer
    x = 423,486.69

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