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Finding the Fourth Proportional to 1,439.81, 2,160.23 and 465.91

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Solution

The fourth proportional to 1,439.81, 2,160.23 and 465.91 is: 699.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.81 : 2,160.23 = 465.91 : x
  2. Step 2: Convert to fraction form
    1,439.81/2,160.23 = 465.91/x
  3. Step 3: Cross multiply
    1,439.81x = 2,160.23 × 465.91
  4. Step 4: Simplify right side
    1,439.81x = 1,006,483.49
  5. Step 5: Solve for x
    x = 1,006,483.49/1,439.81
  6. Step 6: Final answer
    x = 699.04

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