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Finding the Fourth Proportional to 368,802,486.80, 553,203,730.20 and 347,639,325.20

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Solution

The fourth proportional to 368,802,486.80, 553,203,730.20 and 347,639,325.20 is: 521,458,987.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,802,486.80 : 553,203,730.20 = 347,639,325.20 : x
  2. Step 2: Convert to fraction form
    368,802,486.80/553,203,730.20 = 347,639,325.20/x
  3. Step 3: Cross multiply
    368,802,486.80x = 553,203,730.20 × 347,639,325.20
  4. Step 4: Simplify right side
    368,802,486.80x = 192,315,371,464,850,880
  5. Step 5: Solve for x
    x = 192,315,371,464,850,880/368,802,486.80
  6. Step 6: Final answer
    x = 521,458,987.80

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