Home / 551,980-809,790

Finding the Third Proportional to 551,980 and 809,790

Calculator

Solution

The third proportional to 551,980 and 809,790 is: 1,188,013.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,980 : 809,790 = 809,790 : x
  2. Step 2: Convert to fraction form
    551,980/809,790 = 809,790/x
  3. Step 3: Cross multiply
    551,980x = 809,790 × 809,790
  4. Step 4: Simplify right side
    551,980x = 655,759,844,100
  5. Step 5: Solve for x
    x = 655,759,844,100/551,980
  6. Step 6: Final answer
    x = 1,188,013.78

Related Problems

Find third proportional to 275,990 and 404,895
Half scale
Find third proportional to 1,103,960 and 1,619,580
Double scale
Find third proportional to 551,982 and 809,793
Similar ratio
Find third proportional to 827,970 and 1,214,685
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.