Finding the Fourth Proportional to 5,355,638.40, 7,388,048.16 and 3,419,863.68
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Solution
The fourth proportional to 5,355,638.40, 7,388,048.16 and 3,419,863.68 is: 4,717,666.82
Step by Step Solution
- Step 1: Write the proportion equation
5,355,638.40 : 7,388,048.16 = 3,419,863.68 : x - Step 2: Convert to fraction form
5,355,638.40/7,388,048.16 = 3,419,863.68/x - Step 3: Cross multiply
5,355,638.40x = 7,388,048.16 × 3,419,863.68 - Step 4: Simplify right side
5,355,638.40x = 25,266,117,568,474.83 - Step 5: Solve for x
x = 25,266,117,568,474.83/5,355,638.40 - Step 6: Final answer
x = 4,717,666.82
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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.