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Finding the Fourth Proportional to 1,319,179,992.40, 1,978,266,103.80 and 398,750,424.40

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Solution

The fourth proportional to 1,319,179,992.40, 1,978,266,103.80 and 398,750,424.40 is: 597,973,326.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,179,992.40 : 1,978,266,103.80 = 398,750,424.40 : x
  2. Step 2: Convert to fraction form
    1,319,179,992.40/1,978,266,103.80 = 398,750,424.40/x
  3. Step 3: Cross multiply
    1,319,179,992.40x = 1,978,266,103.80 × 398,750,424.40
  4. Step 4: Simplify right side
    1,319,179,992.40x = 788,834,448,466,384,384
  5. Step 5: Solve for x
    x = 788,834,448,466,384,384/1,319,179,992.40
  6. Step 6: Final answer
    x = 597,973,326.62

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