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Finding the Fourth Proportional to 505,016.72, 696,893.64 and 278,661.68

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Solution

The fourth proportional to 505,016.72, 696,893.64 and 278,661.68 is: 384,536.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,016.72 : 696,893.64 = 278,661.68 : x
  2. Step 2: Convert to fraction form
    505,016.72/696,893.64 = 278,661.68/x
  3. Step 3: Cross multiply
    505,016.72x = 696,893.64 × 278,661.68
  4. Step 4: Simplify right side
    505,016.72x = 194,197,552,503.72
  5. Step 5: Solve for x
    x = 194,197,552,503.72/505,016.72
  6. Step 6: Final answer
    x = 384,536.88

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