Finding the Fourth Proportional to 486,715.96, 729,055.56 and 391,431.08
Calculator
Solution
The fourth proportional to 486,715.96, 729,055.56 and 391,431.08 is: 586,327.61
Step by Step Solution
- Step 1: Write the proportion equation
486,715.96 : 729,055.56 = 391,431.08 : x - Step 2: Convert to fraction form
486,715.96/729,055.56 = 391,431.08/x - Step 3: Cross multiply
486,715.96x = 729,055.56 × 391,431.08 - Step 4: Simplify right side
486,715.96x = 285,375,005,230.81 - Step 5: Solve for x
x = 285,375,005,230.81/486,715.96 - Step 6: Final answer
x = 586,327.61
Related Problems
Find fourth proportional to 243,357.98, 364,527.78 and 195,715.54
Half scale
Find fourth proportional to 973,431.92, 1,458,111.12 and 782,862.16
Double scale
Find fourth proportional to 486,716.96, 729,057.06 and 391,432.08
Similar ratio
Find fourth proportional to 730,073.94, 1,093,583.34 and 587,146.62
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.