Home / 860,860.80-1,288,229.40-749,761.20

Finding the Fourth Proportional to 860,860.80, 1,288,229.40 and 749,761.20

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Solution

The fourth proportional to 860,860.80, 1,288,229.40 and 749,761.20 is: 1,121,975.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,860.80 : 1,288,229.40 = 749,761.20 : x
  2. Step 2: Convert to fraction form
    860,860.80/1,288,229.40 = 749,761.20/x
  3. Step 3: Cross multiply
    860,860.80x = 1,288,229.40 × 749,761.20
  4. Step 4: Simplify right side
    860,860.80x = 965,864,420,819.28
  5. Step 5: Solve for x
    x = 965,864,420,819.28/860,860.80
  6. Step 6: Final answer
    x = 1,121,975.14

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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.