Finding the Fourth Proportional to 7,777,541.19, 11,665,979.42 and 2,660,428.65
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Solution
The fourth proportional to 7,777,541.19, 11,665,979.42 and 2,660,428.65 is: 3,990,529.28
Step by Step Solution
- Step 1: Write the proportion equation
7,777,541.19 : 11,665,979.42 = 2,660,428.65 : x - Step 2: Convert to fraction form
7,777,541.19/11,665,979.42 = 2,660,428.65/x - Step 3: Cross multiply
7,777,541.19x = 11,665,979.42 × 2,660,428.65 - Step 4: Simplify right side
7,777,541.19x = 31,036,505,865,976.23 - Step 5: Solve for x
x = 31,036,505,865,976.23/7,777,541.19 - Step 6: Final answer
x = 3,990,529.28
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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.