Finding the Fourth Proportional to 809,431.80, 1,214,147.70 and 494,503.80
Calculator
Solution
The fourth proportional to 809,431.80, 1,214,147.70 and 494,503.80 is: 741,755.70
Step by Step Solution
- Step 1: Write the proportion equation
809,431.80 : 1,214,147.70 = 494,503.80 : x - Step 2: Convert to fraction form
809,431.80/1,214,147.70 = 494,503.80/x - Step 3: Cross multiply
809,431.80x = 1,214,147.70 × 494,503.80 - Step 4: Simplify right side
809,431.80x = 600,400,651,411.26 - Step 5: Solve for x
x = 600,400,651,411.26/809,431.80 - Step 6: Final answer
x = 741,755.70
Related Problems
Find fourth proportional to 404,715.90, 607,073.85 and 247,251.90
Half scale
Find fourth proportional to 1,618,863.60, 2,428,295.40 and 989,007.60
Double scale
Find fourth proportional to 809,432.80, 1,214,149.20 and 494,504.80
Similar ratio
Find fourth proportional to 1,214,147.70, 1,821,221.55 and 741,755.70
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.