Finding the Fourth Proportional to 428,672.09, 642,876.82 and 296,402.33
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Solution
The fourth proportional to 428,672.09, 642,876.82 and 296,402.33 is: 444,512.70
Step by Step Solution
- Step 1: Write the proportion equation
428,672.09 : 642,876.82 = 296,402.33 : x - Step 2: Convert to fraction form
428,672.09/642,876.82 = 296,402.33/x - Step 3: Cross multiply
428,672.09x = 642,876.82 × 296,402.33 - Step 4: Simplify right side
428,672.09x = 190,550,188,217.18 - Step 5: Solve for x
x = 190,550,188,217.18/428,672.09 - Step 6: Final answer
x = 444,512.70
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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.