Finding the Fourth Proportional to 690,720.70, 1,036,221.18 and 217,295.95
Calculator
Solution
The fourth proportional to 690,720.70, 1,036,221.18 and 217,295.95 is: 325,988.01
Step by Step Solution
- Step 1: Write the proportion equation
690,720.70 : 1,036,221.18 = 217,295.95 : x - Step 2: Convert to fraction form
690,720.70/1,036,221.18 = 217,295.95/x - Step 3: Cross multiply
690,720.70x = 1,036,221.18 × 217,295.95 - Step 4: Simplify right side
690,720.70x = 225,166,665,718.22 - Step 5: Solve for x
x = 225,166,665,718.22/690,720.70 - Step 6: Final answer
x = 325,988.01
Related Problems
Find fourth proportional to 345,360.35, 518,110.59 and 108,647.98
Half scale
Find fourth proportional to 1,381,441.40, 2,072,442.36 and 434,591.90
Double scale
Find fourth proportional to 690,721.70, 1,036,222.68 and 217,296.95
Similar ratio
Find fourth proportional to 1,036,081.05, 1,554,331.77 and 325,943.93
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.