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Finding the Fourth Proportional to 550,978.20, 825,446.70 and 313,615.80

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Solution

The fourth proportional to 550,978.20, 825,446.70 and 313,615.80 is: 469,842.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,978.20 : 825,446.70 = 313,615.80 : x
  2. Step 2: Convert to fraction form
    550,978.20/825,446.70 = 313,615.80/x
  3. Step 3: Cross multiply
    550,978.20x = 825,446.70 × 313,615.80
  4. Step 4: Simplify right side
    550,978.20x = 258,873,127,177.86
  5. Step 5: Solve for x
    x = 258,873,127,177.86/550,978.20
  6. Step 6: Final answer
    x = 469,842.78

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