Home / 847,476,859.20-1,272,027,103.20-438,826,286.40

Finding the Fourth Proportional to 847,476,859.20, 1,272,027,103.20 and 438,826,286.40

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Solution

The fourth proportional to 847,476,859.20, 1,272,027,103.20 and 438,826,286.40 is: 658,659,789.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,476,859.20 : 1,272,027,103.20 = 438,826,286.40 : x
  2. Step 2: Convert to fraction form
    847,476,859.20/1,272,027,103.20 = 438,826,286.40/x
  3. Step 3: Cross multiply
    847,476,859.20x = 1,272,027,103.20 × 438,826,286.40
  4. Step 4: Simplify right side
    847,476,859.20x = 558,198,929,897,405,568
  5. Step 5: Solve for x
    x = 558,198,929,897,405,568/847,476,859.20
  6. Step 6: Final answer
    x = 658,659,789.75

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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.