Finding the Fourth Proportional to 521,313.12, 719,413.74 and 291,880.08
Calculator
Solution
The fourth proportional to 521,313.12, 719,413.74 and 291,880.08 is: 402,795.43
Step by Step Solution
- Step 1: Write the proportion equation
521,313.12 : 719,413.74 = 291,880.08 : x - Step 2: Convert to fraction form
521,313.12/719,413.74 = 291,880.08/x - Step 3: Cross multiply
521,313.12x = 719,413.74 × 291,880.08 - Step 4: Simplify right side
521,313.12x = 209,982,539,984.30 - Step 5: Solve for x
x = 209,982,539,984.30/521,313.12 - Step 6: Final answer
x = 402,795.43
Related Problems
Find fourth proportional to 260,656.56, 359,706.87 and 145,940.04
Half scale
Find fourth proportional to 1,042,626.24, 1,438,827.48 and 583,760.16
Double scale
Find fourth proportional to 521,314.12, 719,415.12 and 291,881.08
Similar ratio
Find fourth proportional to 781,969.68, 1,079,120.61 and 437,820.12
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.