Finding the Fourth Proportional to 497,664.81, 686,745.95 and 328,128.57
Calculator
Solution
The fourth proportional to 497,664.81, 686,745.95 and 328,128.57 is: 452,796.66
Step by Step Solution
- Step 1: Write the proportion equation
497,664.81 : 686,745.95 = 328,128.57 : x - Step 2: Convert to fraction form
497,664.81/686,745.95 = 328,128.57/x - Step 3: Cross multiply
497,664.81x = 686,745.95 × 328,128.57 - Step 4: Simplify right side
497,664.81x = 225,340,964,886.15 - Step 5: Solve for x
x = 225,340,964,886.15/497,664.81 - Step 6: Final answer
x = 452,796.66
Related Problems
Find fourth proportional to 248,832.41, 343,372.97 and 164,064.29
Half scale
Find fourth proportional to 995,329.62, 1,373,491.89 and 656,257.14
Double scale
Find fourth proportional to 497,665.81, 686,747.32 and 328,129.57
Similar ratio
Find fourth proportional to 746,497.22, 1,030,118.92 and 492,192.86
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.