Home / 311,219-440,404

Finding the Third Proportional to 311,219 and 440,404

Calculator

Solution

The third proportional to 311,219 and 440,404 is: 623,212.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,219 : 440,404 = 440,404 : x
  2. Step 2: Convert to fraction form
    311,219/440,404 = 440,404/x
  3. Step 3: Cross multiply
    311,219x = 440,404 × 440,404
  4. Step 4: Simplify right side
    311,219x = 193,955,683,216
  5. Step 5: Solve for x
    x = 193,955,683,216/311,219
  6. Step 6: Final answer
    x = 623,212.86

Related Problems

Find third proportional to 155,609.50 and 220,202
Half scale
Find third proportional to 622,438 and 880,808
Double scale
Find third proportional to 311,221 and 440,407
Similar ratio
Find third proportional to 466,828.50 and 660,606
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.