Home / 319,770-687,926

Finding the Third Proportional to 319,770 and 687,926

Calculator

Solution

The third proportional to 319,770 and 687,926 is: 1,479,945.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,770 : 687,926 = 687,926 : x
  2. Step 2: Convert to fraction form
    319,770/687,926 = 687,926/x
  3. Step 3: Cross multiply
    319,770x = 687,926 × 687,926
  4. Step 4: Simplify right side
    319,770x = 473,242,181,476
  5. Step 5: Solve for x
    x = 473,242,181,476/319,770
  6. Step 6: Final answer
    x = 1,479,945.53

Related Problems

Find third proportional to 159,885 and 343,963
Half scale
Find third proportional to 639,540 and 1,375,852
Double scale
Find third proportional to 319,772 and 687,930
Similar ratio
Find third proportional to 479,655 and 1,031,889
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.