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Finding the Fourth Proportional to 258,978,868.40, 388,468,302.60 and 258,978,868.40

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Solution

The fourth proportional to 258,978,868.40, 388,468,302.60 and 258,978,868.40 is: 388,468,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,978,868.40 : 388,468,302.60 = 258,978,868.40 : x
  2. Step 2: Convert to fraction form
    258,978,868.40/388,468,302.60 = 258,978,868.40/x
  3. Step 3: Cross multiply
    258,978,868.40x = 388,468,302.60 × 258,978,868.40
  4. Step 4: Simplify right side
    258,978,868.40x = 100,605,081,416,616,784
  5. Step 5: Solve for x
    x = 100,605,081,416,616,784/258,978,868.40
  6. Step 6: Final answer
    x = 388,468,302.60

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Why These Related Problems?

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