Home / 311,716-445,742

Finding the Third Proportional to 311,716 and 445,742

Calculator

Solution

The third proportional to 311,716 and 445,742 is: 637,394.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,716 : 445,742 = 445,742 : x
  2. Step 2: Convert to fraction form
    311,716/445,742 = 445,742/x
  3. Step 3: Cross multiply
    311,716x = 445,742 × 445,742
  4. Step 4: Simplify right side
    311,716x = 198,685,930,564
  5. Step 5: Solve for x
    x = 198,685,930,564/311,716
  6. Step 6: Final answer
    x = 637,394.07

Related Problems

Find third proportional to 155,858 and 222,871
Half scale
Find third proportional to 623,432 and 891,484
Double scale
Find third proportional to 311,718 and 445,745
Similar ratio
Find third proportional to 467,574 and 668,613
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.