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Finding the Fourth Proportional to 643,900.80, 965,851.20 and 616,598.40

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Solution

The fourth proportional to 643,900.80, 965,851.20 and 616,598.40 is: 924,897.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,900.80 : 965,851.20 = 616,598.40 : x
  2. Step 2: Convert to fraction form
    643,900.80/965,851.20 = 616,598.40/x
  3. Step 3: Cross multiply
    643,900.80x = 965,851.20 × 616,598.40
  4. Step 4: Simplify right side
    643,900.80x = 595,542,304,558.08
  5. Step 5: Solve for x
    x = 595,542,304,558.08/643,900.80
  6. Step 6: Final answer
    x = 924,897.60

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