Home / 442,858,727.70-664,288,091.55-320,414,721.30

Finding the Fourth Proportional to 442,858,727.70, 664,288,091.55 and 320,414,721.30

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Solution

The fourth proportional to 442,858,727.70, 664,288,091.55 and 320,414,721.30 is: 480,622,081.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,858,727.70 : 664,288,091.55 = 320,414,721.30 : x
  2. Step 2: Convert to fraction form
    442,858,727.70/664,288,091.55 = 320,414,721.30/x
  3. Step 3: Cross multiply
    442,858,727.70x = 664,288,091.55 × 320,414,721.30
  4. Step 4: Simplify right side
    442,858,727.70x = 212,847,683,716,902,112
  5. Step 5: Solve for x
    x = 212,847,683,716,902,112/442,858,727.70
  6. Step 6: Final answer
    x = 480,622,081.95

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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.