Finding the Fourth Proportional to 820,135.20, 1,230,202.80 and 654,247.20
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Solution
The fourth proportional to 820,135.20, 1,230,202.80 and 654,247.20 is: 981,370.80
Step by Step Solution
- Step 1: Write the proportion equation
820,135.20 : 1,230,202.80 = 654,247.20 : x - Step 2: Convert to fraction form
820,135.20/1,230,202.80 = 654,247.20/x - Step 3: Cross multiply
820,135.20x = 1,230,202.80 × 654,247.20 - Step 4: Simplify right side
820,135.20x = 804,856,737,332.16 - Step 5: Solve for x
x = 804,856,737,332.16/820,135.20 - Step 6: Final answer
x = 981,370.80
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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.