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Finding the Fourth Proportional to 392,879.56, 589,577.46 and 215,511.16

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Solution

The fourth proportional to 392,879.56, 589,577.46 and 215,511.16 is: 323,408.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,879.56 : 589,577.46 = 215,511.16 : x
  2. Step 2: Convert to fraction form
    392,879.56/589,577.46 = 215,511.16/x
  3. Step 3: Cross multiply
    392,879.56x = 589,577.46 × 215,511.16
  4. Step 4: Simplify right side
    392,879.56x = 127,060,522,314.45
  5. Step 5: Solve for x
    x = 127,060,522,314.45/392,879.56
  6. Step 6: Final answer
    x = 323,408.33

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