Finding the Fourth Proportional to 680,917.96, 939,523.86 and 394,420.84
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Solution
The fourth proportional to 680,917.96, 939,523.86 and 394,420.84 is: 544,217.97
Step by Step Solution
- Step 1: Write the proportion equation
680,917.96 : 939,523.86 = 394,420.84 : x - Step 2: Convert to fraction form
680,917.96/939,523.86 = 394,420.84/x - Step 3: Cross multiply
680,917.96x = 939,523.86 × 394,420.84 - Step 4: Simplify right side
680,917.96x = 370,567,790,061.24 - Step 5: Solve for x
x = 370,567,790,061.24/680,917.96 - Step 6: Final answer
x = 544,217.97
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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.