Home / 831,780.48-1,247,540.58-270,811.20

Finding the Fourth Proportional to 831,780.48, 1,247,540.58 and 270,811.20

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Solution

The fourth proportional to 831,780.48, 1,247,540.58 and 270,811.20 is: 406,174.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,780.48 : 1,247,540.58 = 270,811.20 : x
  2. Step 2: Convert to fraction form
    831,780.48/1,247,540.58 = 270,811.20/x
  3. Step 3: Cross multiply
    831,780.48x = 1,247,540.58 × 270,811.20
  4. Step 4: Simplify right side
    831,780.48x = 337,847,961,518.50
  5. Step 5: Solve for x
    x = 337,847,961,518.50/831,780.48
  6. Step 6: Final answer
    x = 406,174.43

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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.