Home / 316,446-422,715

Finding the Third Proportional to 316,446 and 422,715

Calculator

Solution

The third proportional to 316,446 and 422,715 is: 564,671.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,446 : 422,715 = 422,715 : x
  2. Step 2: Convert to fraction form
    316,446/422,715 = 422,715/x
  3. Step 3: Cross multiply
    316,446x = 422,715 × 422,715
  4. Step 4: Simplify right side
    316,446x = 178,687,971,225
  5. Step 5: Solve for x
    x = 178,687,971,225/316,446
  6. Step 6: Final answer
    x = 564,671.29

Related Problems

Find third proportional to 158,223 and 211,357.50
Half scale
Find third proportional to 632,892 and 845,430
Double scale
Find third proportional to 316,448 and 422,718
Similar ratio
Find third proportional to 474,669 and 634,072.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.