Finding the Fourth Proportional to 3,921,743.18, 5,411,166 and 2,289,409.76
Calculator
Solution
The fourth proportional to 3,921,743.18, 5,411,166 and 2,289,409.76 is: 3,158,895.34
Step by Step Solution
- Step 1: Write the proportion equation
3,921,743.18 : 5,411,166 = 2,289,409.76 : x - Step 2: Convert to fraction form
3,921,743.18/5,411,166 = 2,289,409.76/x - Step 3: Cross multiply
3,921,743.18x = 5,411,166 × 2,289,409.76 - Step 4: Simplify right side
3,921,743.18x = 12,388,376,253,380.16 - Step 5: Solve for x
x = 12,388,376,253,380.16/3,921,743.18 - Step 6: Final answer
x = 3,158,895.34
Related Problems
Find fourth proportional to 1,960,871.59, 2,705,583 and 1,144,704.88
Half scale
Find fourth proportional to 7,843,486.36, 10,822,332 and 4,578,819.52
Double scale
Find fourth proportional to 3,921,744.18, 5,411,167.38 and 2,289,410.76
Similar ratio
Find fourth proportional to 5,882,614.77, 8,116,749 and 3,434,114.64
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.