Finding the Third Proportional to 290,679.75 and 638,646.75
Calculator
Solution
The third proportional to 290,679.75 and 638,646.75 is: 1,403,158.19
Step by Step Solution
- Step 1: Write the proportion equation
290,679.75 : 638,646.75 = 638,646.75 : x - Step 2: Convert to fraction form
290,679.75/638,646.75 = 638,646.75/x - Step 3: Cross multiply
290,679.75x = 638,646.75 × 638,646.75 - Step 4: Simplify right side
290,679.75x = 407,869,671,285.56 - Step 5: Solve for x
x = 407,869,671,285.56/290,679.75 - Step 6: Final answer
x = 1,403,158.19
Related Problems
Find third proportional to 145,339.88 and 319,323.38
Half scale
Find third proportional to 581,359.50 and 1,277,293.50
Double scale
Find third proportional to 290,682 and 638,651
Similar ratio
Find third proportional to 436,019.63 and 957,970.13
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.