Home / 860,263.44-1,290,311.72-261,229.78

Finding the Fourth Proportional to 860,263.44, 1,290,311.72 and 261,229.78

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Solution

The fourth proportional to 860,263.44, 1,290,311.72 and 261,229.78 is: 391,819.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,263.44 : 1,290,311.72 = 261,229.78 : x
  2. Step 2: Convert to fraction form
    860,263.44/1,290,311.72 = 261,229.78/x
  3. Step 3: Cross multiply
    860,263.44x = 1,290,311.72 × 261,229.78
  4. Step 4: Simplify right side
    860,263.44x = 337,067,846,747.02
  5. Step 5: Solve for x
    x = 337,067,846,747.02/860,263.44
  6. Step 6: Final answer
    x = 391,819.33

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1.5x scale

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.