Finding the Fourth Proportional to 681,272.41, 940,156.21 and 394,958.49
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Solution
The fourth proportional to 681,272.41, 940,156.21 and 394,958.49 is: 545,042.88
Step by Step Solution
- Step 1: Write the proportion equation
681,272.41 : 940,156.21 = 394,958.49 : x - Step 2: Convert to fraction form
681,272.41/940,156.21 = 394,958.49/x - Step 3: Cross multiply
681,272.41x = 940,156.21 × 394,958.49 - Step 4: Simplify right side
681,272.41x = 371,322,675,090.93 - Step 5: Solve for x
x = 371,322,675,090.93/681,272.41 - Step 6: Final answer
x = 545,042.88
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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.