Finding the Fourth Proportional to 5,212,292.78, 7,192,959.09 and 2,920,469.87
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Solution
The fourth proportional to 5,212,292.78, 7,192,959.09 and 2,920,469.87 is: 4,030,245.65
Step by Step Solution
- Step 1: Write the proportion equation
5,212,292.78 : 7,192,959.09 = 2,920,469.87 : x - Step 2: Convert to fraction form
5,212,292.78/7,192,959.09 = 2,920,469.87/x - Step 3: Cross multiply
5,212,292.78x = 7,192,959.09 × 2,920,469.87 - Step 4: Simplify right side
5,212,292.78x = 21,006,820,298,487.62 - Step 5: Solve for x
x = 21,006,820,298,487.62/5,212,292.78 - Step 6: Final answer
x = 4,030,245.65
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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.