Home / 394,436,971.20-544,303,103.36-215,816,993.60

Finding the Fourth Proportional to 394,436,971.20, 544,303,103.36 and 215,816,993.60

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Solution

The fourth proportional to 394,436,971.20, 544,303,103.36 and 215,816,993.60 is: 297,816,553.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,436,971.20 : 544,303,103.36 = 215,816,993.60 : x
  2. Step 2: Convert to fraction form
    394,436,971.20/544,303,103.36 = 215,816,993.60/x
  3. Step 3: Cross multiply
    394,436,971.20x = 544,303,103.36 × 215,816,993.60
  4. Step 4: Simplify right side
    394,436,971.20x = 117,469,859,374,305,264
  5. Step 5: Solve for x
    x = 117,469,859,374,305,264/394,436,971.20
  6. Step 6: Final answer
    x = 297,816,553.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.