Finding the Fourth Proportional to 557,689.96, 769,609.48 and 315,972.08
Calculator
Solution
The fourth proportional to 557,689.96, 769,609.48 and 315,972.08 is: 436,039.96
Step by Step Solution
- Step 1: Write the proportion equation
557,689.96 : 769,609.48 = 315,972.08 : x - Step 2: Convert to fraction form
557,689.96/769,609.48 = 315,972.08/x - Step 3: Cross multiply
557,689.96x = 769,609.48 × 315,972.08 - Step 4: Simplify right side
557,689.96x = 243,175,108,183.32 - Step 5: Solve for x
x = 243,175,108,183.32/557,689.96 - Step 6: Final answer
x = 436,039.96
Related Problems
Find fourth proportional to 278,844.98, 384,804.74 and 157,986.04
Half scale
Find fourth proportional to 1,115,379.92, 1,539,218.96 and 631,944.16
Double scale
Find fourth proportional to 557,690.96, 769,610.86 and 315,973.08
Similar ratio
Find fourth proportional to 836,534.94, 1,154,414.22 and 473,958.12
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.