Finding the Third Proportional to 309,403.13 and 478,675.13
Calculator
Solution
The third proportional to 309,403.13 and 478,675.13 is: 740,554.50
Step by Step Solution
- Step 1: Write the proportion equation
309,403.13 : 478,675.13 = 478,675.13 : x - Step 2: Convert to fraction form
309,403.13/478,675.13 = 478,675.13/x - Step 3: Cross multiply
309,403.13x = 478,675.13 × 478,675.13 - Step 4: Simplify right side
309,403.13x = 229,129,875,293.77 - Step 5: Solve for x
x = 229,129,875,293.77/309,403.13 - Step 6: Final answer
x = 740,554.50
Related Problems
Find third proportional to 154,701.56 and 239,337.56
Half scale
Find third proportional to 618,806.25 and 957,350.25
Double scale
Find third proportional to 309,405 and 478,678
Similar ratio
Find third proportional to 464,104.69 and 718,012.69
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.