Finding the Fourth Proportional to 489,186.74, 674,163.60 and 381,586.34
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Solution
The fourth proportional to 489,186.74, 674,163.60 and 381,586.34 is: 525,876.11
Step by Step Solution
- Step 1: Write the proportion equation
489,186.74 : 674,163.60 = 381,586.34 : x - Step 2: Convert to fraction form
489,186.74/674,163.60 = 381,586.34/x - Step 3: Cross multiply
489,186.74x = 674,163.60 × 381,586.34 - Step 4: Simplify right side
489,186.74x = 257,251,620,685.22 - Step 5: Solve for x
x = 257,251,620,685.22/489,186.74 - Step 6: Final answer
x = 525,876.11
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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.