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Finding the Fourth Proportional to 511,489,503.60, 766,730,370.60 and 252,744,658.80

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Solution

The fourth proportional to 511,489,503.60, 766,730,370.60 and 252,744,658.80 is: 378,868,001.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,489,503.60 : 766,730,370.60 = 252,744,658.80 : x
  2. Step 2: Convert to fraction form
    511,489,503.60/766,730,370.60 = 252,744,658.80/x
  3. Step 3: Cross multiply
    511,489,503.60x = 766,730,370.60 × 252,744,658.80
  4. Step 4: Simplify right side
    511,489,503.60x = 193,787,005,908,894,560
  5. Step 5: Solve for x
    x = 193,787,005,908,894,560/511,489,503.60
  6. Step 6: Final answer
    x = 378,868,001.29

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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.