Finding the Fourth Proportional to 770,220.96, 1,062,873.69 and 421,355.70
Calculator
Solution
The fourth proportional to 770,220.96, 1,062,873.69 and 421,355.70 is: 581,453.78
Step by Step Solution
- Step 1: Write the proportion equation
770,220.96 : 1,062,873.69 = 421,355.70 : x - Step 2: Convert to fraction form
770,220.96/1,062,873.69 = 421,355.70/x - Step 3: Cross multiply
770,220.96x = 1,062,873.69 × 421,355.70 - Step 4: Simplify right side
770,220.96x = 447,847,887,661.53 - Step 5: Solve for x
x = 447,847,887,661.53/770,220.96 - Step 6: Final answer
x = 581,453.78
Related Problems
Find fourth proportional to 385,110.48, 531,436.85 and 210,677.85
Half scale
Find fourth proportional to 1,540,441.92, 2,125,747.38 and 842,711.40
Double scale
Find fourth proportional to 770,221.96, 1,062,875.07 and 421,356.70
Similar ratio
Find fourth proportional to 1,155,331.44, 1,594,310.54 and 632,033.55
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.