Finding the Fourth Proportional to 5,355,639.40, 7,388,049.54 and 3,419,864.68
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Solution
The fourth proportional to 5,355,639.40, 7,388,049.54 and 3,419,864.68 is: 4,717,668.20
Step by Step Solution
- Step 1: Write the proportion equation
5,355,639.40 : 7,388,049.54 = 3,419,864.68 : x - Step 2: Convert to fraction form
5,355,639.40/7,388,049.54 = 3,419,864.68/x - Step 3: Cross multiply
5,355,639.40x = 7,388,049.54 × 3,419,864.68 - Step 4: Simplify right side
5,355,639.40x = 25,266,129,675,936.25 - Step 5: Solve for x
x = 25,266,129,675,936.25/5,355,639.40 - Step 6: Final answer
x = 4,717,668.20
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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.