Finding the Fourth Proportional to 411,824.20, 618,135.79 and 198,742.08
Calculator
Solution
The fourth proportional to 411,824.20, 618,135.79 and 198,742.08 is: 298,305.91
Step by Step Solution
- Step 1: Write the proportion equation
411,824.20 : 618,135.79 = 198,742.08 : x - Step 2: Convert to fraction form
411,824.20/618,135.79 = 198,742.08/x - Step 3: Cross multiply
411,824.20x = 618,135.79 × 198,742.08 - Step 4: Simplify right side
411,824.20x = 122,849,591,633.33 - Step 5: Solve for x
x = 122,849,591,633.33/411,824.20 - Step 6: Final answer
x = 298,305.91
Related Problems
Find fourth proportional to 205,912.10, 309,067.89 and 99,371.04
Half scale
Find fourth proportional to 823,648.40, 1,236,271.57 and 397,484.16
Double scale
Find fourth proportional to 411,825.20, 618,137.29 and 198,743.08
Similar ratio
Find fourth proportional to 617,736.30, 927,203.68 and 298,113.12
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.