Finding the Fourth Proportional to 7,207,653.60, 10,812,431.76 and 2,661,897.60
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Solution
The fourth proportional to 7,207,653.60, 10,812,431.76 and 2,661,897.60 is: 3,993,197.75
Step by Step Solution
- Step 1: Write the proportion equation
7,207,653.60 : 10,812,431.76 = 2,661,897.60 : x - Step 2: Convert to fraction form
7,207,653.60/10,812,431.76 = 2,661,897.60/x - Step 3: Cross multiply
7,207,653.60x = 10,812,431.76 × 2,661,897.60 - Step 4: Simplify right side
7,207,653.60x = 28,781,586,152,107.78 - Step 5: Solve for x
x = 28,781,586,152,107.78/7,207,653.60 - Step 6: Final answer
x = 3,993,197.75
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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.