Home / 261,918-409,725

Finding the Third Proportional to 261,918 and 409,725

Calculator

Solution

The third proportional to 261,918 and 409,725 is: 640,943.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,918 : 409,725 = 409,725 : x
  2. Step 2: Convert to fraction form
    261,918/409,725 = 409,725/x
  3. Step 3: Cross multiply
    261,918x = 409,725 × 409,725
  4. Step 4: Simplify right side
    261,918x = 167,874,575,625
  5. Step 5: Solve for x
    x = 167,874,575,625/261,918
  6. Step 6: Final answer
    x = 640,943.26

Related Problems

Find third proportional to 130,959 and 204,862.50
Half scale
Find third proportional to 523,836 and 819,450
Double scale
Find third proportional to 261,920 and 409,728
Similar ratio
Find third proportional to 392,877 and 614,587.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.