Finding the Fourth Proportional to 2,772,809.20, 4,159,213.80 and 1,279,817.20
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Solution
The fourth proportional to 2,772,809.20, 4,159,213.80 and 1,279,817.20 is: 1,919,725.80
Step by Step Solution
- Step 1: Write the proportion equation
2,772,809.20 : 4,159,213.80 = 1,279,817.20 : x - Step 2: Convert to fraction form
2,772,809.20/4,159,213.80 = 1,279,817.20/x - Step 3: Cross multiply
2,772,809.20x = 4,159,213.80 × 1,279,817.20 - Step 4: Simplify right side
2,772,809.20x = 5,323,033,359,717.36 - Step 5: Solve for x
x = 5,323,033,359,717.36/2,772,809.20 - Step 6: Final answer
x = 1,919,725.80
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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.