Home / 401,950-639,824

Finding the Third Proportional to 401,950 and 639,824

Calculator

Solution

The third proportional to 401,950 and 639,824 is: 1,018,471.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,950 : 639,824 = 639,824 : x
  2. Step 2: Convert to fraction form
    401,950/639,824 = 639,824/x
  3. Step 3: Cross multiply
    401,950x = 639,824 × 639,824
  4. Step 4: Simplify right side
    401,950x = 409,374,750,976
  5. Step 5: Solve for x
    x = 409,374,750,976/401,950
  6. Step 6: Final answer
    x = 1,018,471.83

Related Problems

Find third proportional to 200,975 and 319,912
Half scale
Find third proportional to 803,900 and 1,279,648
Double scale
Find third proportional to 401,952 and 639,827
Similar ratio
Find third proportional to 602,925 and 959,736
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.