Finding the Fourth Proportional to 4,218,578.70, 6,319,010.70 and 3,509,990.70
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Solution
The fourth proportional to 4,218,578.70, 6,319,010.70 and 3,509,990.70 is: 5,257,616.46
Step by Step Solution
- Step 1: Write the proportion equation
4,218,578.70 : 6,319,010.70 = 3,509,990.70 : x - Step 2: Convert to fraction form
4,218,578.70/6,319,010.70 = 3,509,990.70/x - Step 3: Cross multiply
4,218,578.70x = 6,319,010.70 × 3,509,990.70 - Step 4: Simplify right side
4,218,578.70x = 22,179,668,790,200.49 - Step 5: Solve for x
x = 22,179,668,790,200.49/4,218,578.70 - Step 6: Final answer
x = 5,257,616.46
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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.