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Finding the Fourth Proportional to 1,329.19, 1,993.01 and 404.47

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Solution

The fourth proportional to 1,329.19, 1,993.01 and 404.47 is: 606.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.19 : 1,993.01 = 404.47 : x
  2. Step 2: Convert to fraction form
    1,329.19/1,993.01 = 404.47/x
  3. Step 3: Cross multiply
    1,329.19x = 1,993.01 × 404.47
  4. Step 4: Simplify right side
    1,329.19x = 806,108.78
  5. Step 5: Solve for x
    x = 806,108.78/1,329.19
  6. Step 6: Final answer
    x = 606.47

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