Finding the Fourth Proportional to 680,895.36, 939,549.60 and 394,413.12
Calculator
Solution
The fourth proportional to 680,895.36, 939,549.60 and 394,413.12 is: 544,240.29
Step by Step Solution
- Step 1: Write the proportion equation
680,895.36 : 939,549.60 = 394,413.12 : x - Step 2: Convert to fraction form
680,895.36/939,549.60 = 394,413.12/x - Step 3: Cross multiply
680,895.36x = 939,549.60 × 394,413.12 - Step 4: Simplify right side
680,895.36x = 370,570,689,130.75 - Step 5: Solve for x
x = 370,570,689,130.75/680,895.36 - Step 6: Final answer
x = 544,240.29
Related Problems
Find fourth proportional to 340,447.68, 469,774.80 and 197,206.56
Half scale
Find fourth proportional to 1,361,790.72, 1,879,099.20 and 788,826.24
Double scale
Find fourth proportional to 680,896.36, 939,550.98 and 394,414.12
Similar ratio
Find fourth proportional to 1,021,343.04, 1,409,324.40 and 591,619.68
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.