Home / 275,874-421,836

Finding the Third Proportional to 275,874 and 421,836

Calculator

Solution

The third proportional to 275,874 and 421,836 is: 645,024.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,874 : 421,836 = 421,836 : x
  2. Step 2: Convert to fraction form
    275,874/421,836 = 421,836/x
  3. Step 3: Cross multiply
    275,874x = 421,836 × 421,836
  4. Step 4: Simplify right side
    275,874x = 177,945,610,896
  5. Step 5: Solve for x
    x = 177,945,610,896/275,874
  6. Step 6: Final answer
    x = 645,024.94

Related Problems

Find third proportional to 137,937 and 210,918
Half scale
Find third proportional to 551,748 and 843,672
Double scale
Find third proportional to 275,876 and 421,839
Similar ratio
Find third proportional to 413,811 and 632,754
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.