Home / 393,990-870,924

Finding the Third Proportional to 393,990 and 870,924

Calculator

Solution

The third proportional to 393,990 and 870,924 is: 1,925,197.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,990 : 870,924 = 870,924 : x
  2. Step 2: Convert to fraction form
    393,990/870,924 = 870,924/x
  3. Step 3: Cross multiply
    393,990x = 870,924 × 870,924
  4. Step 4: Simplify right side
    393,990x = 758,508,613,776
  5. Step 5: Solve for x
    x = 758,508,613,776/393,990
  6. Step 6: Final answer
    x = 1,925,197.63

Related Problems

Find third proportional to 196,995 and 435,462
Half scale
Find third proportional to 787,980 and 1,741,848
Double scale
Find third proportional to 393,992 and 870,928
Similar ratio
Find third proportional to 590,985 and 1,306,386
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.