Home / 815,755,617.28-1,223,872,201.18-263,046,929.86

Finding the Fourth Proportional to 815,755,617.28, 1,223,872,201.18 and 263,046,929.86

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Solution

The fourth proportional to 815,755,617.28, 1,223,872,201.18 and 263,046,929.86 is: 394,647,389.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,755,617.28 : 1,223,872,201.18 = 263,046,929.86 : x
  2. Step 2: Convert to fraction form
    815,755,617.28/1,223,872,201.18 = 263,046,929.86/x
  3. Step 3: Cross multiply
    815,755,617.28x = 1,223,872,201.18 × 263,046,929.86
  4. Step 4: Simplify right side
    815,755,617.28x = 321,935,825,061,399,296
  5. Step 5: Solve for x
    x = 321,935,825,061,399,296/815,755,617.28
  6. Step 6: Final answer
    x = 394,647,389.78

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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.