Finding the Third Proportional to 518,366.50 and 811,409.50
Calculator
Solution
The third proportional to 518,366.50 and 811,409.50 is: 1,270,115.60
Step by Step Solution
- Step 1: Write the proportion equation
518,366.50 : 811,409.50 = 811,409.50 : x - Step 2: Convert to fraction form
518,366.50/811,409.50 = 811,409.50/x - Step 3: Cross multiply
518,366.50x = 811,409.50 × 811,409.50 - Step 4: Simplify right side
518,366.50x = 658,385,376,690.25 - Step 5: Solve for x
x = 658,385,376,690.25/518,366.50 - Step 6: Final answer
x = 1,270,115.60
Related Problems
Find third proportional to 259,183.25 and 405,704.75
Half scale
Find third proportional to 1,036,733 and 1,622,819
Double scale
Find third proportional to 518,369 and 811,413
Similar ratio
Find third proportional to 777,549.75 and 1,217,114.25
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.