Finding the Fourth Proportional to 816,631.39, 1,126,921.83 and 449,105.36
Calculator
Solution
The fourth proportional to 816,631.39, 1,126,921.83 and 449,105.36 is: 619,749.17
Step by Step Solution
- Step 1: Write the proportion equation
816,631.39 : 1,126,921.83 = 449,105.36 : x - Step 2: Convert to fraction form
816,631.39/1,126,921.83 = 449,105.36/x - Step 3: Cross multiply
816,631.39x = 1,126,921.83 × 449,105.36 - Step 4: Simplify right side
816,631.39x = 506,106,626,835.26 - Step 5: Solve for x
x = 506,106,626,835.26/816,631.39 - Step 6: Final answer
x = 619,749.17
Related Problems
Find fourth proportional to 408,315.70, 563,460.91 and 224,552.68
Half scale
Find fourth proportional to 1,633,262.78, 2,253,843.65 and 898,210.71
Double scale
Find fourth proportional to 816,632.39, 1,126,923.21 and 449,106.36
Similar ratio
Find fourth proportional to 1,224,947.09, 1,690,382.74 and 673,658.03
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.