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Finding the Fourth Proportional to 505,409.22, 697,446.45 and 279,049.86

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Solution

The fourth proportional to 505,409.22, 697,446.45 and 279,049.86 is: 385,078.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,409.22 : 697,446.45 = 279,049.86 : x
  2. Step 2: Convert to fraction form
    505,409.22/697,446.45 = 279,049.86/x
  3. Step 3: Cross multiply
    505,409.22x = 697,446.45 × 279,049.86
  4. Step 4: Simplify right side
    505,409.22x = 194,622,334,230.00
  5. Step 5: Solve for x
    x = 194,622,334,230.00/505,409.22
  6. Step 6: Final answer
    x = 385,078.72

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