Finding the Fourth Proportional to 816,516.40, 1,126,728.81 and 453,918.18
Calculator
Solution
The fourth proportional to 816,516.40, 1,126,728.81 and 453,918.18 is: 626,371.60
Step by Step Solution
- Step 1: Write the proportion equation
816,516.40 : 1,126,728.81 = 453,918.18 : x - Step 2: Convert to fraction form
816,516.40/1,126,728.81 = 453,918.18/x - Step 3: Cross multiply
816,516.40x = 1,126,728.81 × 453,918.18 - Step 4: Simplify right side
816,516.40x = 511,442,687,399.50 - Step 5: Solve for x
x = 511,442,687,399.50/816,516.40 - Step 6: Final answer
x = 626,371.60
Related Problems
Find fourth proportional to 408,258.20, 563,364.40 and 226,959.09
Half scale
Find fourth proportional to 1,633,032.80, 2,253,457.61 and 907,836.36
Double scale
Find fourth proportional to 816,517.40, 1,126,730.19 and 453,919.18
Similar ratio
Find fourth proportional to 1,224,774.60, 1,690,093.21 and 680,877.27
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.