Home / 815,923,372.80-1,224,123,821.28-263,215,168.32

Finding the Fourth Proportional to 815,923,372.80, 1,224,123,821.28 and 263,215,168.32

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Solution

The fourth proportional to 815,923,372.80, 1,224,123,821.28 and 263,215,168.32 is: 394,899,776.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,923,372.80 : 1,224,123,821.28 = 263,215,168.32 : x
  2. Step 2: Convert to fraction form
    815,923,372.80/1,224,123,821.28 = 263,215,168.32/x
  3. Step 3: Cross multiply
    815,923,372.80x = 1,224,123,821.28 × 263,215,168.32
  4. Step 4: Simplify right side
    815,923,372.80x = 322,207,957,662,736,768
  5. Step 5: Solve for x
    x = 322,207,957,662,736,768/815,923,372.80
  6. Step 6: Final answer
    x = 394,899,776.63

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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.