Home / 398,628-859,866

Finding the Third Proportional to 398,628 and 859,866

Calculator

Solution

The third proportional to 398,628 and 859,866 is: 1,854,785.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,628 : 859,866 = 859,866 : x
  2. Step 2: Convert to fraction form
    398,628/859,866 = 859,866/x
  3. Step 3: Cross multiply
    398,628x = 859,866 × 859,866
  4. Step 4: Simplify right side
    398,628x = 739,369,537,956
  5. Step 5: Solve for x
    x = 739,369,537,956/398,628
  6. Step 6: Final answer
    x = 1,854,785.76

Related Problems

Find third proportional to 199,314 and 429,933
Half scale
Find third proportional to 797,256 and 1,719,732
Double scale
Find third proportional to 398,630 and 859,870
Similar ratio
Find third proportional to 597,942 and 1,289,799
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.