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Finding the Fourth Proportional to 268,978,709.80, 403,468,064.70 and 268,978,709.80

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Solution

The fourth proportional to 268,978,709.80, 403,468,064.70 and 268,978,709.80 is: 403,468,064.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,978,709.80 : 403,468,064.70 = 268,978,709.80 : x
  2. Step 2: Convert to fraction form
    268,978,709.80/403,468,064.70 = 268,978,709.80/x
  3. Step 3: Cross multiply
    268,978,709.80x = 403,468,064.70 × 268,978,709.80
  4. Step 4: Simplify right side
    268,978,709.80x = 108,524,319,488,508,928
  5. Step 5: Solve for x
    x = 108,524,319,488,508,928/268,978,709.80
  6. Step 6: Final answer
    x = 403,468,064.70

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