Finding the Fourth Proportional to 744,728.36, 1,027,694.42 and 405,197.96
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Solution
The fourth proportional to 744,728.36, 1,027,694.42 and 405,197.96 is: 559,156.47
Step by Step Solution
- Step 1: Write the proportion equation
744,728.36 : 1,027,694.42 = 405,197.96 : x - Step 2: Convert to fraction form
744,728.36/1,027,694.42 = 405,197.96/x - Step 3: Cross multiply
744,728.36x = 1,027,694.42 × 405,197.96 - Step 4: Simplify right side
744,728.36x = 416,419,682,487.38 - Step 5: Solve for x
x = 416,419,682,487.38/744,728.36 - Step 6: Final answer
x = 559,156.47
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.