Finding the Fourth Proportional to 816,107.70, 1,224,161.55 and 442,859.70
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Solution
The fourth proportional to 816,107.70, 1,224,161.55 and 442,859.70 is: 664,289.55
Step by Step Solution
- Step 1: Write the proportion equation
816,107.70 : 1,224,161.55 = 442,859.70 : x - Step 2: Convert to fraction form
816,107.70/1,224,161.55 = 442,859.70/x - Step 3: Cross multiply
816,107.70x = 1,224,161.55 × 442,859.70 - Step 4: Simplify right side
816,107.70x = 542,131,816,784.54 - Step 5: Solve for x
x = 542,131,816,784.54/816,107.70 - Step 6: Final answer
x = 664,289.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.