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Finding the Fourth Proportional to 520,174.64, 780,419.31 and 368,664.75

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Solution

The fourth proportional to 520,174.64, 780,419.31 and 368,664.75 is: 553,108.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,174.64 : 780,419.31 = 368,664.75 : x
  2. Step 2: Convert to fraction form
    520,174.64/780,419.31 = 368,664.75/x
  3. Step 3: Cross multiply
    520,174.64x = 780,419.31 × 368,664.75
  4. Step 4: Simplify right side
    520,174.64x = 287,713,089,816.32
  5. Step 5: Solve for x
    x = 287,713,089,816.32/520,174.64
  6. Step 6: Final answer
    x = 553,108.65

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