Home / 311,104-664,855

Finding the Third Proportional to 311,104 and 664,855

Calculator

Solution

The third proportional to 311,104 and 664,855 is: 1,420,850.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,104 : 664,855 = 664,855 : x
  2. Step 2: Convert to fraction form
    311,104/664,855 = 664,855/x
  3. Step 3: Cross multiply
    311,104x = 664,855 × 664,855
  4. Step 4: Simplify right side
    311,104x = 442,032,171,025
  5. Step 5: Solve for x
    x = 442,032,171,025/311,104
  6. Step 6: Final answer
    x = 1,420,850.17

Related Problems

Find third proportional to 155,552 and 332,427.50
Half scale
Find third proportional to 622,208 and 1,329,710
Double scale
Find third proportional to 311,106 and 664,859
Similar ratio
Find third proportional to 466,656 and 997,282.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.