Finding the Fourth Proportional to 2,128,411.68, 3,189,845.16 and 864,762
Calculator
Solution
The fourth proportional to 2,128,411.68, 3,189,845.16 and 864,762 is: 1,296,016.61
Step by Step Solution
- Step 1: Write the proportion equation
2,128,411.68 : 3,189,845.16 = 864,762 : x - Step 2: Convert to fraction form
2,128,411.68/3,189,845.16 = 864,762/x - Step 3: Cross multiply
2,128,411.68x = 3,189,845.16 × 864,762 - Step 4: Simplify right side
2,128,411.68x = 2,758,456,880,251.92 - Step 5: Solve for x
x = 2,758,456,880,251.92/2,128,411.68 - Step 6: Final answer
x = 1,296,016.61
Related Problems
Find fourth proportional to 1,064,205.84, 1,594,922.58 and 432,381
Half scale
Find fourth proportional to 4,256,823.36, 6,379,690.32 and 1,729,524
Double scale
Find fourth proportional to 2,128,412.68, 3,189,846.66 and 864,763
Similar ratio
Find fourth proportional to 3,192,617.52, 4,784,767.74 and 1,297,143
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.