Finding the Fourth Proportional to 830,757.45, 1,245,425.33 and 318,789.99
Calculator
Solution
The fourth proportional to 830,757.45, 1,245,425.33 and 318,789.99 is: 477,912.21
Step by Step Solution
- Step 1: Write the proportion equation
830,757.45 : 1,245,425.33 = 318,789.99 : x - Step 2: Convert to fraction form
830,757.45/1,245,425.33 = 318,789.99/x - Step 3: Cross multiply
830,757.45x = 1,245,425.33 × 318,789.99 - Step 4: Simplify right side
830,757.45x = 397,029,126,902.50 - Step 5: Solve for x
x = 397,029,126,902.50/830,757.45 - Step 6: Final answer
x = 477,912.21
Related Problems
Find fourth proportional to 415,378.73, 622,712.66 and 159,395.00
Half scale
Find fourth proportional to 1,661,514.90, 2,490,850.65 and 637,579.98
Double scale
Find fourth proportional to 830,758.45, 1,245,426.82 and 318,790.99
Similar ratio
Find fourth proportional to 1,246,136.18, 1,868,137.99 and 478,184.99
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.