Finding the Fourth Proportional to 4,872,390.62, 7,306,067.64 and 2,138,819.18
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Solution
The fourth proportional to 4,872,390.62, 7,306,067.64 and 2,138,819.18 is: 3,207,123.32
Step by Step Solution
- Step 1: Write the proportion equation
4,872,390.62 : 7,306,067.64 = 2,138,819.18 : x - Step 2: Convert to fraction form
4,872,390.62/7,306,067.64 = 2,138,819.18/x - Step 3: Cross multiply
4,872,390.62x = 7,306,067.64 × 2,138,819.18 - Step 4: Simplify right side
4,872,390.62x = 15,626,357,598,809.34 - Step 5: Solve for x
x = 15,626,357,598,809.34/4,872,390.62 - Step 6: Final answer
x = 3,207,123.32
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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.