Finding the Fourth Proportional to 639,328.25, 958,229.76 and 297,309.99
Calculator
Solution
The fourth proportional to 639,328.25, 958,229.76 and 297,309.99 is: 445,610.33
Step by Step Solution
- Step 1: Write the proportion equation
639,328.25 : 958,229.76 = 297,309.99 : x - Step 2: Convert to fraction form
639,328.25/958,229.76 = 297,309.99/x - Step 3: Cross multiply
639,328.25x = 958,229.76 × 297,309.99 - Step 4: Simplify right side
639,328.25x = 284,891,274,774.05 - Step 5: Solve for x
x = 284,891,274,774.05/639,328.25 - Step 6: Final answer
x = 445,610.33
Related Problems
Find fourth proportional to 319,664.13, 479,114.88 and 148,654.99
Half scale
Find fourth proportional to 1,278,656.50, 1,916,459.51 and 594,619.97
Double scale
Find fourth proportional to 639,329.25, 958,231.26 and 297,310.99
Similar ratio
Find fourth proportional to 958,992.38, 1,437,344.64 and 445,964.98
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.