Home / 398,829-867,642

Finding the Third Proportional to 398,829 and 867,642

Calculator

Solution

The third proportional to 398,829 and 867,642 is: 1,887,532.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,829 : 867,642 = 867,642 : x
  2. Step 2: Convert to fraction form
    398,829/867,642 = 867,642/x
  3. Step 3: Cross multiply
    398,829x = 867,642 × 867,642
  4. Step 4: Simplify right side
    398,829x = 752,802,640,164
  5. Step 5: Solve for x
    x = 752,802,640,164/398,829
  6. Step 6: Final answer
    x = 1,887,532.35

Related Problems

Find third proportional to 199,414.50 and 433,821
Half scale
Find third proportional to 797,658 and 1,735,284
Double scale
Find third proportional to 398,831 and 867,646
Similar ratio
Find third proportional to 598,243.50 and 1,301,463
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.