Finding the Fourth Proportional to 8,815,972.20, 13,207,628.70 and 5,018,173.80
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Solution
The fourth proportional to 8,815,972.20, 13,207,628.70 and 5,018,173.80 is: 7,517,965.66
Step by Step Solution
- Step 1: Write the proportion equation
8,815,972.20 : 13,207,628.70 = 5,018,173.80 : x - Step 2: Convert to fraction form
8,815,972.20/13,207,628.70 = 5,018,173.80/x - Step 3: Cross multiply
8,815,972.20x = 13,207,628.70 × 5,018,173.80 - Step 4: Simplify right side
8,815,972.20x = 66,278,176,302,468.05 - Step 5: Solve for x
x = 66,278,176,302,468.05/8,815,972.20 - Step 6: Final answer
x = 7,517,965.66
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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.