Home / 680,172,936.35-938,608,456.52-378,773,793.68

Finding the Fourth Proportional to 680,172,936.35, 938,608,456.52 and 378,773,793.68

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Solution

The fourth proportional to 680,172,936.35, 938,608,456.52 and 378,773,793.68 is: 522,691,019.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,172,936.35 : 938,608,456.52 = 378,773,793.68 : x
  2. Step 2: Convert to fraction form
    680,172,936.35/938,608,456.52 = 378,773,793.68/x
  3. Step 3: Cross multiply
    680,172,936.35x = 938,608,456.52 × 378,773,793.68
  4. Step 4: Simplify right side
    680,172,936.35x = 355,520,285,852,463,680
  5. Step 5: Solve for x
    x = 355,520,285,852,463,680/680,172,936.35
  6. Step 6: Final answer
    x = 522,691,019.97

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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.