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Finding the Fourth Proportional to 396,386,906.80, 594,580,360.20 and 396,386,906.80

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Solution

The fourth proportional to 396,386,906.80, 594,580,360.20 and 396,386,906.80 is: 594,580,360.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,386,906.80 : 594,580,360.20 = 396,386,906.80 : x
  2. Step 2: Convert to fraction form
    396,386,906.80/594,580,360.20 = 396,386,906.80/x
  3. Step 3: Cross multiply
    396,386,906.80x = 594,580,360.20 × 396,386,906.80
  4. Step 4: Simplify right side
    396,386,906.80x = 235,683,869,823,707,840
  5. Step 5: Solve for x
    x = 235,683,869,823,707,840/396,386,906.80
  6. Step 6: Final answer
    x = 594,580,360.20

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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.