Finding the Fourth Proportional to 8,517,845.40, 12,776,768.10 and 7,821,115.80
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Solution
The fourth proportional to 8,517,845.40, 12,776,768.10 and 7,821,115.80 is: 11,731,673.70
Step by Step Solution
- Step 1: Write the proportion equation
8,517,845.40 : 12,776,768.10 = 7,821,115.80 : x - Step 2: Convert to fraction form
8,517,845.40/12,776,768.10 = 7,821,115.80/x - Step 3: Cross multiply
8,517,845.40x = 12,776,768.10 × 7,821,115.80 - Step 4: Simplify right side
8,517,845.40x = 99,928,582,859,845.97 - Step 5: Solve for x
x = 99,928,582,859,845.97/8,517,845.40 - Step 6: Final answer
x = 11,731,673.70
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1.5x scale
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.