Finding the Fourth Proportional to 1,122,412.80, 1,548,904.50 and 613,117.20
Calculator
Solution
The fourth proportional to 1,122,412.80, 1,548,904.50 and 613,117.20 is: 846,087.99
Step by Step Solution
- Step 1: Write the proportion equation
1,122,412.80 : 1,548,904.50 = 613,117.20 : x - Step 2: Convert to fraction form
1,122,412.80/1,548,904.50 = 613,117.20/x - Step 3: Cross multiply
1,122,412.80x = 1,548,904.50 × 613,117.20 - Step 4: Simplify right side
1,122,412.80x = 949,659,990,107.40 - Step 5: Solve for x
x = 949,659,990,107.40/1,122,412.80 - Step 6: Final answer
x = 846,087.99
Related Problems
Find fourth proportional to 561,206.40, 774,452.25 and 306,558.60
Half scale
Find fourth proportional to 2,244,825.60, 3,097,809 and 1,226,234.40
Double scale
Find fourth proportional to 1,122,413.80, 1,548,905.88 and 613,118.20
Similar ratio
Find fourth proportional to 1,683,619.20, 2,323,356.75 and 919,675.80
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.