Finding the Fourth Proportional to 415,006.20, 622,509.30 and 379,576.80
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Solution
The fourth proportional to 415,006.20, 622,509.30 and 379,576.80 is: 569,365.20
Step by Step Solution
- Step 1: Write the proportion equation
415,006.20 : 622,509.30 = 379,576.80 : x - Step 2: Convert to fraction form
415,006.20/622,509.30 = 379,576.80/x - Step 3: Cross multiply
415,006.20x = 622,509.30 × 379,576.80 - Step 4: Simplify right side
415,006.20x = 236,290,088,064.24 - Step 5: Solve for x
x = 236,290,088,064.24/415,006.20 - Step 6: Final answer
x = 569,365.20
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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.