Finding the Fourth Proportional to 565,388.40, 780,238.52 and 310,755.99
Calculator
Solution
The fourth proportional to 565,388.40, 780,238.52 and 310,755.99 is: 428,844.66
Step by Step Solution
- Step 1: Write the proportion equation
565,388.40 : 780,238.52 = 310,755.99 : x - Step 2: Convert to fraction form
565,388.40/780,238.52 = 310,755.99/x - Step 3: Cross multiply
565,388.40x = 780,238.52 × 310,755.99 - Step 4: Simplify right side
565,388.40x = 242,463,798,004.19 - Step 5: Solve for x
x = 242,463,798,004.19/565,388.40 - Step 6: Final answer
x = 428,844.66
Related Problems
Find fourth proportional to 282,694.20, 390,119.26 and 155,378.00
Half scale
Find fourth proportional to 1,130,776.81, 1,560,477.05 and 621,511.99
Double scale
Find fourth proportional to 565,389.40, 780,239.90 and 310,756.99
Similar ratio
Find fourth proportional to 848,082.61, 1,170,357.79 and 466,133.99
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.