Finding the Fourth Proportional to 6,690,243.62, 9,231,795.74 and 3,709,872.09
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Solution
The fourth proportional to 6,690,243.62, 9,231,795.74 and 3,709,872.09 is: 5,119,212.89
Step by Step Solution
- Step 1: Write the proportion equation
6,690,243.62 : 9,231,795.74 = 3,709,872.09 : x - Step 2: Convert to fraction form
6,690,243.62/9,231,795.74 = 3,709,872.09/x - Step 3: Cross multiply
6,690,243.62x = 9,231,795.74 × 3,709,872.09 - Step 4: Simplify right side
6,690,243.62x = 34,248,781,365,681.57 - Step 5: Solve for x
x = 34,248,781,365,681.57/6,690,243.62 - Step 6: Final answer
x = 5,119,212.89
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.