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Finding the Fourth Proportional to 494,686.20, 742,029.30 and 317,539.20

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Solution

The fourth proportional to 494,686.20, 742,029.30 and 317,539.20 is: 476,308.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,686.20 : 742,029.30 = 317,539.20 : x
  2. Step 2: Convert to fraction form
    494,686.20/742,029.30 = 317,539.20/x
  3. Step 3: Cross multiply
    494,686.20x = 742,029.30 × 317,539.20
  4. Step 4: Simplify right side
    494,686.20x = 235,623,390,298.56
  5. Step 5: Solve for x
    x = 235,623,390,298.56/494,686.20
  6. Step 6: Final answer
    x = 476,308.80

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