Finding the Fourth Proportional to 420,464.40, 580,723.56 and 306,251.88
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Solution
The fourth proportional to 420,464.40, 580,723.56 and 306,251.88 is: 422,979.17
Step by Step Solution
- Step 1: Write the proportion equation
420,464.40 : 580,723.56 = 306,251.88 : x - Step 2: Convert to fraction form
420,464.40/580,723.56 = 306,251.88/x - Step 3: Cross multiply
420,464.40x = 580,723.56 × 306,251.88 - Step 4: Simplify right side
420,464.40x = 177,847,682,010.29 - Step 5: Solve for x
x = 177,847,682,010.29/420,464.40 - Step 6: Final answer
x = 422,979.17
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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.