Finding the Fourth Proportional to 4,389,721.20, 6,598,578.60 and 4,137,778.80
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Solution
The fourth proportional to 4,389,721.20, 6,598,578.60 and 4,137,778.80 is: 6,219,861.67
Step by Step Solution
- Step 1: Write the proportion equation
4,389,721.20 : 6,598,578.60 = 4,137,778.80 : x - Step 2: Convert to fraction form
4,389,721.20/6,598,578.60 = 4,137,778.80/x - Step 3: Cross multiply
4,389,721.20x = 6,598,578.60 × 4,137,778.80 - Step 4: Simplify right side
4,389,721.20x = 27,303,458,641,213.68 - Step 5: Solve for x
x = 27,303,458,641,213.68/4,389,721.20 - Step 6: Final answer
x = 6,219,861.67
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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.