Finding the Fourth Proportional to 816,129.20, 1,224,193.80 and 343,348.40
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Solution
The fourth proportional to 816,129.20, 1,224,193.80 and 343,348.40 is: 515,022.60
Step by Step Solution
- Step 1: Write the proportion equation
816,129.20 : 1,224,193.80 = 343,348.40 : x - Step 2: Convert to fraction form
816,129.20/1,224,193.80 = 343,348.40/x - Step 3: Cross multiply
816,129.20x = 1,224,193.80 × 343,348.40 - Step 4: Simplify right side
816,129.20x = 420,324,982,519.92 - Step 5: Solve for x
x = 420,324,982,519.92/816,129.20 - Step 6: Final answer
x = 515,022.60
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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.