Home / 639,406-938,372

Finding the Third Proportional to 639,406 and 938,372

Calculator

Solution

The third proportional to 639,406 and 938,372 is: 1,377,125.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,406 : 938,372 = 938,372 : x
  2. Step 2: Convert to fraction form
    639,406/938,372 = 938,372/x
  3. Step 3: Cross multiply
    639,406x = 938,372 × 938,372
  4. Step 4: Simplify right side
    639,406x = 880,542,010,384
  5. Step 5: Solve for x
    x = 880,542,010,384/639,406
  6. Step 6: Final answer
    x = 1,377,125.04

Related Problems

Find third proportional to 319,703 and 469,186
Half scale
Find third proportional to 1,278,812 and 1,876,744
Double scale
Find third proportional to 639,408 and 938,375
Similar ratio
Find third proportional to 959,109 and 1,407,558
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.