Finding the Fourth Proportional to 471,809.20, 707,713.80 and 378,497.20
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Solution
The fourth proportional to 471,809.20, 707,713.80 and 378,497.20 is: 567,745.80
Step by Step Solution
- Step 1: Write the proportion equation
471,809.20 : 707,713.80 = 378,497.20 : x - Step 2: Convert to fraction form
471,809.20/707,713.80 = 378,497.20/x - Step 3: Cross multiply
471,809.20x = 707,713.80 × 378,497.20 - Step 4: Simplify right side
471,809.20x = 267,867,691,701.36 - Step 5: Solve for x
x = 267,867,691,701.36/471,809.20 - Step 6: Final answer
x = 567,745.80
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1.5x scale
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.