Home / 815,923,366.80-1,224,123,812.28-263,215,162.32

Finding the Fourth Proportional to 815,923,366.80, 1,224,123,812.28 and 263,215,162.32

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Solution

The fourth proportional to 815,923,366.80, 1,224,123,812.28 and 263,215,162.32 is: 394,899,767.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,923,366.80 : 1,224,123,812.28 = 263,215,162.32 : x
  2. Step 2: Convert to fraction form
    815,923,366.80/1,224,123,812.28 = 263,215,162.32/x
  3. Step 3: Cross multiply
    815,923,366.80x = 1,224,123,812.28 × 263,215,162.32
  4. Step 4: Simplify right side
    815,923,366.80x = 322,207,947,949,057,408
  5. Step 5: Solve for x
    x = 322,207,947,949,057,408/815,923,366.80
  6. Step 6: Final answer
    x = 394,899,767.62

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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.