Finding the Fourth Proportional to 807,765.09, 1,211,791.62 and 268,053.80
Calculator
Solution
The fourth proportional to 807,765.09, 1,211,791.62 and 268,053.80 is: 402,128.47
Step by Step Solution
- Step 1: Write the proportion equation
807,765.09 : 1,211,791.62 = 268,053.80 : x - Step 2: Convert to fraction form
807,765.09/1,211,791.62 = 268,053.80/x - Step 3: Cross multiply
807,765.09x = 1,211,791.62 × 268,053.80 - Step 4: Simplify right side
807,765.09x = 324,825,342,490.20 - Step 5: Solve for x
x = 324,825,342,490.20/807,765.09 - Step 6: Final answer
x = 402,128.47
Related Problems
Find fourth proportional to 403,882.55, 605,895.81 and 134,026.90
Half scale
Find fourth proportional to 1,615,530.18, 2,423,583.24 and 536,107.59
Double scale
Find fourth proportional to 807,766.09, 1,211,793.12 and 268,054.80
Similar ratio
Find fourth proportional to 1,211,647.64, 1,817,687.43 and 402,080.69
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.