Finding the Fourth Proportional to 5,378,214.72, 7,421,841.12 and 2,930,847.68
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Solution
The fourth proportional to 5,378,214.72, 7,421,841.12 and 2,930,847.68 is: 4,044,517.92
Step by Step Solution
- Step 1: Write the proportion equation
5,378,214.72 : 7,421,841.12 = 2,930,847.68 : x - Step 2: Convert to fraction form
5,378,214.72/7,421,841.12 = 2,930,847.68/x - Step 3: Cross multiply
5,378,214.72x = 7,421,841.12 × 2,930,847.68 - Step 4: Simplify right side
5,378,214.72x = 21,752,285,827,880.60 - Step 5: Solve for x
x = 21,752,285,827,880.60/5,378,214.72 - Step 6: Final answer
x = 4,044,517.92
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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.