Finding the Fourth Proportional to 680,791.44, 939,618.16 and 394,311.44
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Solution
The fourth proportional to 680,791.44, 939,618.16 and 394,311.44 is: 544,222.75
Step by Step Solution
- Step 1: Write the proportion equation
680,791.44 : 939,618.16 = 394,311.44 : x - Step 2: Convert to fraction form
680,791.44/939,618.16 = 394,311.44/x - Step 3: Cross multiply
680,791.44x = 939,618.16 × 394,311.44 - Step 4: Simplify right side
680,791.44x = 370,502,189,719.75 - Step 5: Solve for x
x = 370,502,189,719.75/680,791.44 - Step 6: Final answer
x = 544,222.75
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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.