Home / 260,070-408,075

Finding the Third Proportional to 260,070 and 408,075

Calculator

Solution

The third proportional to 260,070 and 408,075 is: 640,309.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,070 : 408,075 = 408,075 : x
  2. Step 2: Convert to fraction form
    260,070/408,075 = 408,075/x
  3. Step 3: Cross multiply
    260,070x = 408,075 × 408,075
  4. Step 4: Simplify right side
    260,070x = 166,525,205,625
  5. Step 5: Solve for x
    x = 166,525,205,625/260,070
  6. Step 6: Final answer
    x = 640,309.17

Related Problems

Find third proportional to 130,035 and 204,037.50
Half scale
Find third proportional to 520,140 and 816,150
Double scale
Find third proportional to 260,072 and 408,078
Similar ratio
Find third proportional to 390,105 and 612,112.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.