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Finding the Fourth Proportional to 419,229,086.40, 628,843,629.60 and 419,229,086.40

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Solution

The fourth proportional to 419,229,086.40, 628,843,629.60 and 419,229,086.40 is: 628,843,629.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,229,086.40 : 628,843,629.60 = 419,229,086.40 : x
  2. Step 2: Convert to fraction form
    419,229,086.40/628,843,629.60 = 419,229,086.40/x
  3. Step 3: Cross multiply
    419,229,086.40x = 628,843,629.60 × 419,229,086.40
  4. Step 4: Simplify right side
    419,229,086.40x = 263,629,540,325,668,000
  5. Step 5: Solve for x
    x = 263,629,540,325,668,000/419,229,086.40
  6. Step 6: Final answer
    x = 628,843,629.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.