Finding the Fourth Proportional to 4,078,427.20, 6,117,640.80 and 2,188,859.20
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Solution
The fourth proportional to 4,078,427.20, 6,117,640.80 and 2,188,859.20 is: 3,283,288.80
Step by Step Solution
- Step 1: Write the proportion equation
4,078,427.20 : 6,117,640.80 = 2,188,859.20 : x - Step 2: Convert to fraction form
4,078,427.20/6,117,640.80 = 2,188,859.20/x - Step 3: Cross multiply
4,078,427.20x = 6,117,640.80 × 2,188,859.20 - Step 4: Simplify right side
4,078,427.20x = 13,390,654,347,375.36 - Step 5: Solve for x
x = 13,390,654,347,375.36/4,078,427.20 - Step 6: Final answer
x = 3,283,288.80
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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.