Home / 397,664-870,928

Finding the Third Proportional to 397,664 and 870,928

Calculator

Solution

The third proportional to 397,664 and 870,928 is: 1,907,428.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,664 : 870,928 = 870,928 : x
  2. Step 2: Convert to fraction form
    397,664/870,928 = 870,928/x
  3. Step 3: Cross multiply
    397,664x = 870,928 × 870,928
  4. Step 4: Simplify right side
    397,664x = 758,515,581,184
  5. Step 5: Solve for x
    x = 758,515,581,184/397,664
  6. Step 6: Final answer
    x = 1,907,428.33

Related Problems

Find third proportional to 198,832 and 435,464
Half scale
Find third proportional to 795,328 and 1,741,856
Double scale
Find third proportional to 397,666 and 870,932
Similar ratio
Find third proportional to 596,496 and 1,306,392
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.