Finding the Fourth Proportional to 7,382,816.70, 11,074,225.05 and 1,991,456.70
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Solution
The fourth proportional to 7,382,816.70, 11,074,225.05 and 1,991,456.70 is: 2,987,185.05
Step by Step Solution
- Step 1: Write the proportion equation
7,382,816.70 : 11,074,225.05 = 1,991,456.70 : x - Step 2: Convert to fraction form
7,382,816.70/11,074,225.05 = 1,991,456.70/x - Step 3: Cross multiply
7,382,816.70x = 11,074,225.05 × 1,991,456.70 - Step 4: Simplify right side
7,382,816.70x = 22,053,839,673,130.34 - Step 5: Solve for x
x = 22,053,839,673,130.34/7,382,816.70 - Step 6: Final answer
x = 2,987,185.05
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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.