Finding the Fourth Proportional to 849,738.96, 1,275,396.84 and 429,310.08
Calculator
Solution
The fourth proportional to 849,738.96, 1,275,396.84 and 429,310.08 is: 644,363.44
Step by Step Solution
- Step 1: Write the proportion equation
849,738.96 : 1,275,396.84 = 429,310.08 : x - Step 2: Convert to fraction form
849,738.96/1,275,396.84 = 429,310.08/x - Step 3: Cross multiply
849,738.96x = 1,275,396.84 × 429,310.08 - Step 4: Simplify right side
849,738.96x = 547,540,719,412.15 - Step 5: Solve for x
x = 547,540,719,412.15/849,738.96 - Step 6: Final answer
x = 644,363.44
Related Problems
Find fourth proportional to 424,869.48, 637,698.42 and 214,655.04
Half scale
Find fourth proportional to 1,699,477.92, 2,550,793.68 and 858,620.16
Double scale
Find fourth proportional to 849,739.96, 1,275,398.34 and 429,311.08
Similar ratio
Find fourth proportional to 1,274,608.44, 1,913,095.26 and 643,965.12
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.