Home / 515,112-787,977

Finding the Third Proportional to 515,112 and 787,977

Calculator

Solution

The third proportional to 515,112 and 787,977 is: 1,205,383.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,112 : 787,977 = 787,977 : x
  2. Step 2: Convert to fraction form
    515,112/787,977 = 787,977/x
  3. Step 3: Cross multiply
    515,112x = 787,977 × 787,977
  4. Step 4: Simplify right side
    515,112x = 620,907,752,529
  5. Step 5: Solve for x
    x = 620,907,752,529/515,112
  6. Step 6: Final answer
    x = 1,205,383.98

Related Problems

Find third proportional to 257,556 and 393,988.50
Half scale
Find third proportional to 1,030,224 and 1,575,954
Double scale
Find third proportional to 515,114 and 787,980
Similar ratio
Find third proportional to 772,668 and 1,181,965.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.