Finding the Fourth Proportional to 506,931.70, 699,857.01 and 378,577.90
Calculator
Solution
The fourth proportional to 506,931.70, 699,857.01 and 378,577.90 is: 522,655.02
Step by Step Solution
- Step 1: Write the proportion equation
506,931.70 : 699,857.01 = 378,577.90 : x - Step 2: Convert to fraction form
506,931.70/699,857.01 = 378,577.90/x - Step 3: Cross multiply
506,931.70x = 699,857.01 × 378,577.90 - Step 4: Simplify right side
506,931.70x = 264,950,397,146.08 - Step 5: Solve for x
x = 264,950,397,146.08/506,931.70 - Step 6: Final answer
x = 522,655.02
Related Problems
Find fourth proportional to 253,465.85, 349,928.51 and 189,288.95
Half scale
Find fourth proportional to 1,013,863.40, 1,399,714.02 and 757,155.80
Double scale
Find fourth proportional to 506,932.70, 699,858.39 and 378,578.90
Similar ratio
Find fourth proportional to 760,397.55, 1,049,785.52 and 567,866.85
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.