Home / 860,104.20-1,290,302.10-261,060.60

Finding the Fourth Proportional to 860,104.20, 1,290,302.10 and 261,060.60

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Solution

The fourth proportional to 860,104.20, 1,290,302.10 and 261,060.60 is: 391,635.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,104.20 : 1,290,302.10 = 261,060.60 : x
  2. Step 2: Convert to fraction form
    860,104.20/1,290,302.10 = 261,060.60/x
  3. Step 3: Cross multiply
    860,104.20x = 1,290,302.10 × 261,060.60
  4. Step 4: Simplify right side
    860,104.20x = 336,847,040,407.26
  5. Step 5: Solve for x
    x = 336,847,040,407.26/860,104.20
  6. Step 6: Final answer
    x = 391,635.15

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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.