Home / 442,858,747.70-664,288,121.55-320,414,741.30

Finding the Fourth Proportional to 442,858,747.70, 664,288,121.55 and 320,414,741.30

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Solution

The fourth proportional to 442,858,747.70, 664,288,121.55 and 320,414,741.30 is: 480,622,111.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,858,747.70 : 664,288,121.55 = 320,414,741.30 : x
  2. Step 2: Convert to fraction form
    442,858,747.70/664,288,121.55 = 320,414,741.30/x
  3. Step 3: Cross multiply
    442,858,747.70x = 664,288,121.55 × 320,414,741.30
  4. Step 4: Simplify right side
    442,858,747.70x = 212,847,706,615,106,208
  5. Step 5: Solve for x
    x = 212,847,706,615,106,208/442,858,747.70
  6. Step 6: Final answer
    x = 480,622,111.95

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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.