Finding the Third Proportional to 378,155 and 819,318.75
Calculator
Solution
The third proportional to 378,155 and 819,318.75 is: 1,775,153.61
Step by Step Solution
- Step 1: Write the proportion equation
378,155 : 819,318.75 = 819,318.75 : x - Step 2: Convert to fraction form
378,155/819,318.75 = 819,318.75/x - Step 3: Cross multiply
378,155x = 819,318.75 × 819,318.75 - Step 4: Simplify right side
378,155x = 671,283,214,101.56 - Step 5: Solve for x
x = 671,283,214,101.56/378,155 - Step 6: Final answer
x = 1,775,153.61
Related Problems
Find third proportional to 189,077.50 and 409,659.38
Half scale
Find third proportional to 756,310 and 1,638,637.50
Double scale
Find third proportional to 378,157 and 819,323
Similar ratio
Find third proportional to 567,232.50 and 1,228,978.13
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.