Home / 399,010-861,322

Finding the Third Proportional to 399,010 and 861,322

Calculator

Solution

The third proportional to 399,010 and 861,322 is: 1,859,290.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,010 : 861,322 = 861,322 : x
  2. Step 2: Convert to fraction form
    399,010/861,322 = 861,322/x
  3. Step 3: Cross multiply
    399,010x = 861,322 × 861,322
  4. Step 4: Simplify right side
    399,010x = 741,875,587,684
  5. Step 5: Solve for x
    x = 741,875,587,684/399,010
  6. Step 6: Final answer
    x = 1,859,290.71

Related Problems

Find third proportional to 199,505 and 430,661
Half scale
Find third proportional to 798,020 and 1,722,644
Double scale
Find third proportional to 399,012 and 861,326
Similar ratio
Find third proportional to 598,515 and 1,291,983
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.