Home / 400,128-853,824

Finding the Third Proportional to 400,128 and 853,824

Calculator

Solution

The third proportional to 400,128 and 853,824 is: 1,821,955.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,128 : 853,824 = 853,824 : x
  2. Step 2: Convert to fraction form
    400,128/853,824 = 853,824/x
  3. Step 3: Cross multiply
    400,128x = 853,824 × 853,824
  4. Step 4: Simplify right side
    400,128x = 729,015,422,976
  5. Step 5: Solve for x
    x = 729,015,422,976/400,128
  6. Step 6: Final answer
    x = 1,821,955.53

Related Problems

Find third proportional to 200,064 and 426,912
Half scale
Find third proportional to 800,256 and 1,707,648
Double scale
Find third proportional to 400,130 and 853,828
Similar ratio
Find third proportional to 600,192 and 1,280,736
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.