Finding the Fourth Proportional to 8,309,819.70, 12,457,731.15 and 4,320,731.70
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Solution
The fourth proportional to 8,309,819.70, 12,457,731.15 and 4,320,731.70 is: 6,477,458.70
Step by Step Solution
- Step 1: Write the proportion equation
8,309,819.70 : 12,457,731.15 = 4,320,731.70 : x - Step 2: Convert to fraction form
8,309,819.70/12,457,731.15 = 4,320,731.70/x - Step 3: Cross multiply
8,309,819.70x = 12,457,731.15 × 4,320,731.70 - Step 4: Simplify right side
8,309,819.70x = 53,826,513,889,882.46 - Step 5: Solve for x
x = 53,826,513,889,882.46/8,309,819.70 - Step 6: Final answer
x = 6,477,458.70
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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.