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Finding the Fourth Proportional to 611,881.20, 917,821.80 and 543,646.80

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Solution

The fourth proportional to 611,881.20, 917,821.80 and 543,646.80 is: 815,470.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,881.20 : 917,821.80 = 543,646.80 : x
  2. Step 2: Convert to fraction form
    611,881.20/917,821.80 = 543,646.80/x
  3. Step 3: Cross multiply
    611,881.20x = 917,821.80 × 543,646.80
  4. Step 4: Simplify right side
    611,881.20x = 498,970,884,540.24
  5. Step 5: Solve for x
    x = 498,970,884,540.24/611,881.20
  6. Step 6: Final answer
    x = 815,470.20

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