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Finding the Fourth Proportional to 652,878,847.20, 978,042,812.40 and 393,323,062.80

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Solution

The fourth proportional to 652,878,847.20, 978,042,812.40 and 393,323,062.80 is: 589,216,201.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,878,847.20 : 978,042,812.40 = 393,323,062.80 : x
  2. Step 2: Convert to fraction form
    652,878,847.20/978,042,812.40 = 393,323,062.80/x
  3. Step 3: Cross multiply
    652,878,847.20x = 978,042,812.40 × 393,323,062.80
  4. Step 4: Simplify right side
    652,878,847.20x = 384,686,794,522,693,824
  5. Step 5: Solve for x
    x = 384,686,794,522,693,824/652,878,847.20
  6. Step 6: Final answer
    x = 589,216,201.71

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