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Finding the Fourth Proportional to 1,359.12, 2,038.86 and 493.68

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Solution

The fourth proportional to 1,359.12, 2,038.86 and 493.68 is: 740.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,359.12 : 2,038.86 = 493.68 : x
  2. Step 2: Convert to fraction form
    1,359.12/2,038.86 = 493.68/x
  3. Step 3: Cross multiply
    1,359.12x = 2,038.86 × 493.68
  4. Step 4: Simplify right side
    1,359.12x = 1,006,544.40
  5. Step 5: Solve for x
    x = 1,006,544.40/1,359.12
  6. Step 6: Final answer
    x = 740.59

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