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Finding the Fourth Proportional to 615,169.20, 921,760.20 and 348,135.60

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Solution

The fourth proportional to 615,169.20, 921,760.20 and 348,135.60 is: 521,641.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,169.20 : 921,760.20 = 348,135.60 : x
  2. Step 2: Convert to fraction form
    615,169.20/921,760.20 = 348,135.60/x
  3. Step 3: Cross multiply
    615,169.20x = 921,760.20 × 348,135.60
  4. Step 4: Simplify right side
    615,169.20x = 320,897,540,283.12
  5. Step 5: Solve for x
    x = 320,897,540,283.12/615,169.20
  6. Step 6: Final answer
    x = 521,641.10

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