Finding the Fourth Proportional to 7,381,639.20, 11,072,458.80 and 6,814,768.80
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Solution
The fourth proportional to 7,381,639.20, 11,072,458.80 and 6,814,768.80 is: 10,222,153.20
Step by Step Solution
- Step 1: Write the proportion equation
7,381,639.20 : 11,072,458.80 = 6,814,768.80 : x - Step 2: Convert to fraction form
7,381,639.20/11,072,458.80 = 6,814,768.80/x - Step 3: Cross multiply
7,381,639.20x = 11,072,458.80 × 6,814,768.80 - Step 4: Simplify right side
7,381,639.20x = 75,456,246,769,525.44 - Step 5: Solve for x
x = 75,456,246,769,525.44/7,381,639.20 - Step 6: Final answer
x = 10,222,153.20
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1.5x scale
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.