Finding the Fourth Proportional to 644,531.40, 965,630.70 and 394,921.80
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Solution
The fourth proportional to 644,531.40, 965,630.70 and 394,921.80 is: 591,668.02
Step by Step Solution
- Step 1: Write the proportion equation
644,531.40 : 965,630.70 = 394,921.80 : x - Step 2: Convert to fraction form
644,531.40/965,630.70 = 394,921.80/x - Step 3: Cross multiply
644,531.40x = 965,630.70 × 394,921.80 - Step 4: Simplify right side
644,531.40x = 381,348,614,179.26 - Step 5: Solve for x
x = 381,348,614,179.26/644,531.40 - Step 6: Final answer
x = 591,668.02
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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.