Finding the Fourth Proportional to 6,912,042.20, 10,368,063.30 and 4,747,203.80
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Solution
The fourth proportional to 6,912,042.20, 10,368,063.30 and 4,747,203.80 is: 7,120,805.70
Step by Step Solution
- Step 1: Write the proportion equation
6,912,042.20 : 10,368,063.30 = 4,747,203.80 : x - Step 2: Convert to fraction form
6,912,042.20/10,368,063.30 = 4,747,203.80/x - Step 3: Cross multiply
6,912,042.20x = 10,368,063.30 × 4,747,203.80 - Step 4: Simplify right side
6,912,042.20x = 49,219,309,496,400.54 - Step 5: Solve for x
x = 49,219,309,496,400.54/6,912,042.20 - Step 6: Final answer
x = 7,120,805.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.