Finding the Fourth Proportional to 7,972,021.38, 11,001,288.45 and 4,487,343.06
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Solution
The fourth proportional to 7,972,021.38, 11,001,288.45 and 4,487,343.06 is: 6,192,476.54
Step by Step Solution
- Step 1: Write the proportion equation
7,972,021.38 : 11,001,288.45 = 4,487,343.06 : x - Step 2: Convert to fraction form
7,972,021.38/11,001,288.45 = 4,487,343.06/x - Step 3: Cross multiply
7,972,021.38x = 11,001,288.45 × 4,487,343.06 - Step 4: Simplify right side
7,972,021.38x = 49,366,555,377,165.65 - Step 5: Solve for x
x = 49,366,555,377,165.65/7,972,021.38 - Step 6: Final answer
x = 6,192,476.54
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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.