Finding the Fourth Proportional to 2,128,664.40, 3,192,996.60 and 1,372,837.20
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Solution
The fourth proportional to 2,128,664.40, 3,192,996.60 and 1,372,837.20 is: 2,059,255.80
Step by Step Solution
- Step 1: Write the proportion equation
2,128,664.40 : 3,192,996.60 = 1,372,837.20 : x - Step 2: Convert to fraction form
2,128,664.40/3,192,996.60 = 1,372,837.20/x - Step 3: Cross multiply
2,128,664.40x = 3,192,996.60 × 1,372,837.20 - Step 4: Simplify right side
2,128,664.40x = 4,383,464,511,953.52 - Step 5: Solve for x
x = 4,383,464,511,953.52/2,128,664.40 - Step 6: Final answer
x = 2,059,255.80
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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.