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Finding the Fourth Proportional to 327,888,907.80, 491,833,361.70 and 85,551,811.80

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Solution

The fourth proportional to 327,888,907.80, 491,833,361.70 and 85,551,811.80 is: 128,327,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,888,907.80 : 491,833,361.70 = 85,551,811.80 : x
  2. Step 2: Convert to fraction form
    327,888,907.80/491,833,361.70 = 85,551,811.80/x
  3. Step 3: Cross multiply
    327,888,907.80x = 491,833,361.70 × 85,551,811.80
  4. Step 4: Simplify right side
    327,888,907.80x = 42,077,235,197,119,728
  5. Step 5: Solve for x
    x = 42,077,235,197,119,728/327,888,907.80
  6. Step 6: Final answer
    x = 128,327,717.70

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