Home / 394,654,719.20-591,982,078.80-388,608,101.60

Finding the Fourth Proportional to 394,654,719.20, 591,982,078.80 and 388,608,101.60

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Solution

The fourth proportional to 394,654,719.20, 591,982,078.80 and 388,608,101.60 is: 582,912,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,654,719.20 : 591,982,078.80 = 388,608,101.60 : x
  2. Step 2: Convert to fraction form
    394,654,719.20/591,982,078.80 = 388,608,101.60/x
  3. Step 3: Cross multiply
    394,654,719.20x = 591,982,078.80 × 388,608,101.60
  4. Step 4: Simplify right side
    394,654,719.20x = 230,049,031,823,689,600
  5. Step 5: Solve for x
    x = 230,049,031,823,689,600/394,654,719.20
  6. Step 6: Final answer
    x = 582,912,152.40

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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.