Home / 860,861.80-1,288,230.90-749,762.20

Finding the Fourth Proportional to 860,861.80, 1,288,230.90 and 749,762.20

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Solution

The fourth proportional to 860,861.80, 1,288,230.90 and 749,762.20 is: 1,121,976.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,861.80 : 1,288,230.90 = 749,762.20 : x
  2. Step 2: Convert to fraction form
    860,861.80/1,288,230.90 = 749,762.20/x
  3. Step 3: Cross multiply
    860,861.80x = 1,288,230.90 × 749,762.20
  4. Step 4: Simplify right side
    860,861.80x = 965,866,833,691.98
  5. Step 5: Solve for x
    x = 965,866,833,691.98/860,861.80
  6. Step 6: Final answer
    x = 1,121,976.64

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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.