Finding the Third Proportional to 311,555.25 and 677,785.50
Calculator
Solution
The third proportional to 311,555.25 and 677,785.50 is: 1,474,515.95
Step by Step Solution
- Step 1: Write the proportion equation
311,555.25 : 677,785.50 = 677,785.50 : x - Step 2: Convert to fraction form
311,555.25/677,785.50 = 677,785.50/x - Step 3: Cross multiply
311,555.25x = 677,785.50 × 677,785.50 - Step 4: Simplify right side
311,555.25x = 459,393,184,010.25 - Step 5: Solve for x
x = 459,393,184,010.25/311,555.25 - Step 6: Final answer
x = 1,474,515.95
Related Problems
Find third proportional to 155,777.63 and 338,892.75
Half scale
Find third proportional to 623,110.50 and 1,355,571
Double scale
Find third proportional to 311,557 and 677,790
Similar ratio
Find third proportional to 467,332.88 and 1,016,678.25
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.