Finding the Fourth Proportional to 420,463.40, 580,722.18 and 306,250.88
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Solution
The fourth proportional to 420,463.40, 580,722.18 and 306,250.88 is: 422,977.79
Step by Step Solution
- Step 1: Write the proportion equation
420,463.40 : 580,722.18 = 306,250.88 : x - Step 2: Convert to fraction form
420,463.40/580,722.18 = 306,250.88/x - Step 3: Cross multiply
420,463.40x = 580,722.18 × 306,250.88 - Step 4: Simplify right side
420,463.40x = 177,846,678,660.52 - Step 5: Solve for x
x = 177,846,678,660.52/420,463.40 - Step 6: Final answer
x = 422,977.79
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1.5x scale
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.