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Finding the Fourth Proportional to 521,013.20, 780,936.60 and 296,481.20

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Solution

The fourth proportional to 521,013.20, 780,936.60 and 296,481.20 is: 444,389.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,013.20 : 780,936.60 = 296,481.20 : x
  2. Step 2: Convert to fraction form
    521,013.20/780,936.60 = 296,481.20/x
  3. Step 3: Cross multiply
    521,013.20x = 780,936.60 × 296,481.20
  4. Step 4: Simplify right side
    521,013.20x = 231,533,020,291.92
  5. Step 5: Solve for x
    x = 231,533,020,291.92/521,013.20
  6. Step 6: Final answer
    x = 444,389.93

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