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Finding the Fourth Proportional to 538,474.56, 743,129.96 and 309,106.09

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Solution

The fourth proportional to 538,474.56, 743,129.96 and 309,106.09 is: 426,586.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,474.56 : 743,129.96 = 309,106.09 : x
  2. Step 2: Convert to fraction form
    538,474.56/743,129.96 = 309,106.09/x
  3. Step 3: Cross multiply
    538,474.56x = 743,129.96 × 309,106.09
  4. Step 4: Simplify right side
    538,474.56x = 229,705,996,297.46
  5. Step 5: Solve for x
    x = 229,705,996,297.46/538,474.56
  6. Step 6: Final answer
    x = 426,586.53

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