Finding the Fourth Proportional to 3,821,960.40, 5,732,940.60 and 2,138,845.20
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Solution
The fourth proportional to 3,821,960.40, 5,732,940.60 and 2,138,845.20 is: 3,208,267.80
Step by Step Solution
- Step 1: Write the proportion equation
3,821,960.40 : 5,732,940.60 = 2,138,845.20 : x - Step 2: Convert to fraction form
3,821,960.40/5,732,940.60 = 2,138,845.20/x - Step 3: Cross multiply
3,821,960.40x = 5,732,940.60 × 2,138,845.20 - Step 4: Simplify right side
3,821,960.40x = 12,261,872,484,195.12 - Step 5: Solve for x
x = 12,261,872,484,195.12/3,821,960.40 - Step 6: Final answer
x = 3,208,267.80
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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.