Finding the Fourth Proportional to 391,797.76, 587,694.20 and 189,157.42
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Solution
The fourth proportional to 391,797.76, 587,694.20 and 189,157.42 is: 283,734.95
Step by Step Solution
- Step 1: Write the proportion equation
391,797.76 : 587,694.20 = 189,157.42 : x - Step 2: Convert to fraction form
391,797.76/587,694.20 = 189,157.42/x - Step 3: Cross multiply
391,797.76x = 587,694.20 × 189,157.42 - Step 4: Simplify right side
391,797.76x = 111,166,718,620.96 - Step 5: Solve for x
x = 111,166,718,620.96/391,797.76 - Step 6: Final answer
x = 283,734.95
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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.