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Finding the Fourth Proportional to 398,608,427.20, 597,912,640.80 and 296,571,755.20

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Solution

The fourth proportional to 398,608,427.20, 597,912,640.80 and 296,571,755.20 is: 444,857,632.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,608,427.20 : 597,912,640.80 = 296,571,755.20 : x
  2. Step 2: Convert to fraction form
    398,608,427.20/597,912,640.80 = 296,571,755.20/x
  3. Step 3: Cross multiply
    398,608,427.20x = 597,912,640.80 × 296,571,755.20
  4. Step 4: Simplify right side
    398,608,427.20x = 177,324,001,338,323,104
  5. Step 5: Solve for x
    x = 177,324,001,338,323,104/398,608,427.20
  6. Step 6: Final answer
    x = 444,857,632.80

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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.