Finding the Fourth Proportional to 415,079.40, 622,619.10 and 378,337.80
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Solution
The fourth proportional to 415,079.40, 622,619.10 and 378,337.80 is: 567,506.70
Step by Step Solution
- Step 1: Write the proportion equation
415,079.40 : 622,619.10 = 378,337.80 : x - Step 2: Convert to fraction form
415,079.40/622,619.10 = 378,337.80/x - Step 3: Cross multiply
415,079.40x = 622,619.10 × 378,337.80 - Step 4: Simplify right side
415,079.40x = 235,560,340,531.98 - Step 5: Solve for x
x = 235,560,340,531.98/415,079.40 - Step 6: Final answer
x = 567,506.70
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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.