Finding the Fourth Proportional to 7,678,841.97, 11,518,294.50 and 1,921,559.92
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Solution
The fourth proportional to 7,678,841.97, 11,518,294.50 and 1,921,559.92 is: 2,882,347.77
Step by Step Solution
- Step 1: Write the proportion equation
7,678,841.97 : 11,518,294.50 = 1,921,559.92 : x - Step 2: Convert to fraction form
7,678,841.97/11,518,294.50 = 1,921,559.92/x - Step 3: Cross multiply
7,678,841.97x = 11,518,294.50 × 1,921,559.92 - Step 4: Simplify right side
7,678,841.97x = 22,133,093,057,956.44 - Step 5: Solve for x
x = 22,133,093,057,956.44/7,678,841.97 - Step 6: Final answer
x = 2,882,347.77
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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.