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Finding the Fourth Proportional to 521,713.20, 782,569.80 and 403,469.40

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Solution

The fourth proportional to 521,713.20, 782,569.80 and 403,469.40 is: 605,204.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,713.20 : 782,569.80 = 403,469.40 : x
  2. Step 2: Convert to fraction form
    521,713.20/782,569.80 = 403,469.40/x
  3. Step 3: Cross multiply
    521,713.20x = 782,569.80 × 403,469.40
  4. Step 4: Simplify right side
    521,713.20x = 315,742,967,664.12
  5. Step 5: Solve for x
    x = 315,742,967,664.12/521,713.20
  6. Step 6: Final answer
    x = 605,204.10

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