Finding the Fourth Proportional to 4,290,439.20, 5,920,992.18 and 2,455,473.48
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Solution
The fourth proportional to 4,290,439.20, 5,920,992.18 and 2,455,473.48 is: 3,388,659.90
Step by Step Solution
- Step 1: Write the proportion equation
4,290,439.20 : 5,920,992.18 = 2,455,473.48 : x - Step 2: Convert to fraction form
4,290,439.20/5,920,992.18 = 2,455,473.48/x - Step 3: Cross multiply
4,290,439.20x = 5,920,992.18 × 2,455,473.48 - Step 4: Simplify right side
4,290,439.20x = 14,538,839,273,277.38 - Step 5: Solve for x
x = 14,538,839,273,277.38/4,290,439.20 - Step 6: Final answer
x = 3,388,659.90
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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.