Home / 860,814.20-1,291,221.30-261,770.60

Finding the Fourth Proportional to 860,814.20, 1,291,221.30 and 261,770.60

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Solution

The fourth proportional to 860,814.20, 1,291,221.30 and 261,770.60 is: 392,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,814.20 : 1,291,221.30 = 261,770.60 : x
  2. Step 2: Convert to fraction form
    860,814.20/1,291,221.30 = 261,770.60/x
  3. Step 3: Cross multiply
    860,814.20x = 1,291,221.30 × 261,770.60
  4. Step 4: Simplify right side
    860,814.20x = 338,003,774,433.78
  5. Step 5: Solve for x
    x = 338,003,774,433.78/860,814.20
  6. Step 6: Final answer
    x = 392,655.90

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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.