Finding the Fourth Proportional to 5,378,355.22, 7,421,914.26 and 2,930,914.15
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Solution
The fourth proportional to 5,378,355.22, 7,421,914.26 and 2,930,914.15 is: 4,044,543.85
Step by Step Solution
- Step 1: Write the proportion equation
5,378,355.22 : 7,421,914.26 = 2,930,914.15 : x - Step 2: Convert to fraction form
5,378,355.22/7,421,914.26 = 2,930,914.15/x - Step 3: Cross multiply
5,378,355.22x = 7,421,914.26 × 2,930,914.15 - Step 4: Simplify right side
5,378,355.22x = 21,752,993,524,720.78 - Step 5: Solve for x
x = 21,752,993,524,720.78/5,378,355.22 - Step 6: Final answer
x = 4,044,543.85
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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.