Home / 299,646-643,761

Finding the Third Proportional to 299,646 and 643,761

Calculator

Solution

The third proportional to 299,646 and 643,761 is: 1,383,059.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,646 : 643,761 = 643,761 : x
  2. Step 2: Convert to fraction form
    299,646/643,761 = 643,761/x
  3. Step 3: Cross multiply
    299,646x = 643,761 × 643,761
  4. Step 4: Simplify right side
    299,646x = 414,428,225,121
  5. Step 5: Solve for x
    x = 414,428,225,121/299,646
  6. Step 6: Final answer
    x = 1,383,059.43

Related Problems

Find third proportional to 149,823 and 321,880.50
Half scale
Find third proportional to 599,292 and 1,287,522
Double scale
Find third proportional to 299,648 and 643,765
Similar ratio
Find third proportional to 449,469 and 965,641.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.