Home / 311,936-638,626

Finding the Third Proportional to 311,936 and 638,626

Calculator

Solution

The third proportional to 311,936 and 638,626 is: 1,307,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,936 : 638,626 = 638,626 : x
  2. Step 2: Convert to fraction form
    311,936/638,626 = 638,626/x
  3. Step 3: Cross multiply
    311,936x = 638,626 × 638,626
  4. Step 4: Simplify right side
    311,936x = 407,843,167,876
  5. Step 5: Solve for x
    x = 407,843,167,876/311,936
  6. Step 6: Final answer
    x = 1,307,457.84

Related Problems

Find third proportional to 155,968 and 319,313
Half scale
Find third proportional to 623,872 and 1,277,252
Double scale
Find third proportional to 311,938 and 638,630
Similar ratio
Find third proportional to 467,904 and 957,939
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.