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Finding the Fourth Proportional to 419,914,984, 629,978,764.08 and 128,796,917.92

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Solution

The fourth proportional to 419,914,984, 629,978,764.08 and 128,796,917.92 is: 193,227,977.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,914,984 : 629,978,764.08 = 128,796,917.92 : x
  2. Step 2: Convert to fraction form
    419,914,984/629,978,764.08 = 128,796,917.92/x
  3. Step 3: Cross multiply
    419,914,984x = 629,978,764.08 × 128,796,917.92
  4. Step 4: Simplify right side
    419,914,984x = 81,139,323,168,554,816
  5. Step 5: Solve for x
    x = 81,139,323,168,554,816/419,914,984
  6. Step 6: Final answer
    x = 193,227,977.71

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Why These Related Problems?

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