Finding the Third Proportional to 438,045.38 and 640,437.75
Calculator
Solution
The third proportional to 438,045.38 and 640,437.75 is: 936,342.52
Step by Step Solution
- Step 1: Write the proportion equation
438,045.38 : 640,437.75 = 640,437.75 : x - Step 2: Convert to fraction form
438,045.38/640,437.75 = 640,437.75/x - Step 3: Cross multiply
438,045.38x = 640,437.75 × 640,437.75 - Step 4: Simplify right side
438,045.38x = 410,160,511,625.06 - Step 5: Solve for x
x = 410,160,511,625.06/438,045.38 - Step 6: Final answer
x = 936,342.52
Related Problems
Find third proportional to 219,022.69 and 320,218.88
Half scale
Find third proportional to 876,090.75 and 1,280,875.50
Double scale
Find third proportional to 438,047 and 640,441
Similar ratio
Find third proportional to 657,068.06 and 960,656.63
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.