Home / 418,132-628,140

Finding the Third Proportional to 418,132 and 628,140

Calculator

Solution

The third proportional to 418,132 and 628,140 is: 943,625.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,132 : 628,140 = 628,140 : x
  2. Step 2: Convert to fraction form
    418,132/628,140 = 628,140/x
  3. Step 3: Cross multiply
    418,132x = 628,140 × 628,140
  4. Step 4: Simplify right side
    418,132x = 394,559,859,600
  5. Step 5: Solve for x
    x = 394,559,859,600/418,132
  6. Step 6: Final answer
    x = 943,625.12

Related Problems

Find third proportional to 209,066 and 314,070
Half scale
Find third proportional to 836,264 and 1,256,280
Double scale
Find third proportional to 418,134 and 628,143
Similar ratio
Find third proportional to 627,198 and 942,210
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.