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Finding the Fourth Proportional to 285,794,228.80, 428,691,343.20 and 285,794,228.80

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Solution

The fourth proportional to 285,794,228.80, 428,691,343.20 and 285,794,228.80 is: 428,691,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,794,228.80 : 428,691,343.20 = 285,794,228.80 : x
  2. Step 2: Convert to fraction form
    285,794,228.80/428,691,343.20 = 285,794,228.80/x
  3. Step 3: Cross multiply
    285,794,228.80x = 428,691,343.20 × 285,794,228.80
  4. Step 4: Simplify right side
    285,794,228.80x = 122,517,511,823,080,128
  5. Step 5: Solve for x
    x = 122,517,511,823,080,128/285,794,228.80
  6. Step 6: Final answer
    x = 428,691,343.20

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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.