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Finding the Fourth Proportional to 445,115.52, 613,924.56 and 309,149.64

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Solution

The fourth proportional to 445,115.52, 613,924.56 and 309,149.64 is: 426,393.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,115.52 : 613,924.56 = 309,149.64 : x
  2. Step 2: Convert to fraction form
    445,115.52/613,924.56 = 309,149.64/x
  3. Step 3: Cross multiply
    445,115.52x = 613,924.56 × 309,149.64
  4. Step 4: Simplify right side
    445,115.52x = 189,794,556,711.16
  5. Step 5: Solve for x
    x = 189,794,556,711.16/445,115.52
  6. Step 6: Final answer
    x = 426,393.93

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