Home / 279,746-421,954

Finding the Third Proportional to 279,746 and 421,954

Calculator

Solution

The third proportional to 279,746 and 421,954 is: 636,452.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,746 : 421,954 = 421,954 : x
  2. Step 2: Convert to fraction form
    279,746/421,954 = 421,954/x
  3. Step 3: Cross multiply
    279,746x = 421,954 × 421,954
  4. Step 4: Simplify right side
    279,746x = 178,045,178,116
  5. Step 5: Solve for x
    x = 178,045,178,116/279,746
  6. Step 6: Final answer
    x = 636,452.99

Related Problems

Find third proportional to 139,873 and 210,977
Half scale
Find third proportional to 559,492 and 843,908
Double scale
Find third proportional to 279,748 and 421,957
Similar ratio
Find third proportional to 419,619 and 632,931
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.