Home / 860,280.14-1,290,422.26-261,245.80

Finding the Fourth Proportional to 860,280.14, 1,290,422.26 and 261,245.80

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Solution

The fourth proportional to 860,280.14, 1,290,422.26 and 261,245.80 is: 391,869.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,280.14 : 1,290,422.26 = 261,245.80 : x
  2. Step 2: Convert to fraction form
    860,280.14/1,290,422.26 = 261,245.80/x
  3. Step 3: Cross multiply
    860,280.14x = 1,290,422.26 × 261,245.80
  4. Step 4: Simplify right side
    860,280.14x = 337,117,396,611.42
  5. Step 5: Solve for x
    x = 337,117,396,611.42/860,280.14
  6. Step 6: Final answer
    x = 391,869.32

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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.