Finding the Fourth Proportional to 765,280.36, 1,147,959.42 and 259,900.84
Calculator
Solution
The fourth proportional to 765,280.36, 1,147,959.42 and 259,900.84 is: 389,864.46
Step by Step Solution
- Step 1: Write the proportion equation
765,280.36 : 1,147,959.42 = 259,900.84 : x - Step 2: Convert to fraction form
765,280.36/1,147,959.42 = 259,900.84/x - Step 3: Cross multiply
765,280.36x = 1,147,959.42 × 259,900.84 - Step 4: Simplify right side
765,280.36x = 298,355,617,543.91 - Step 5: Solve for x
x = 298,355,617,543.91/765,280.36 - Step 6: Final answer
x = 389,864.46
Related Problems
Find fourth proportional to 382,640.18, 573,979.71 and 129,950.42
Half scale
Find fourth proportional to 1,530,560.72, 2,295,918.84 and 519,801.68
Double scale
Find fourth proportional to 765,281.36, 1,147,960.92 and 259,901.84
Similar ratio
Find fourth proportional to 1,147,920.54, 1,721,939.13 and 389,851.26
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.