Finding the Fourth Proportional to 6,479,939.80, 9,719,909.70 and 6,231,107.80
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Solution
The fourth proportional to 6,479,939.80, 9,719,909.70 and 6,231,107.80 is: 9,346,661.70
Step by Step Solution
- Step 1: Write the proportion equation
6,479,939.80 : 9,719,909.70 = 6,231,107.80 : x - Step 2: Convert to fraction form
6,479,939.80/9,719,909.70 = 6,231,107.80/x - Step 3: Cross multiply
6,479,939.80x = 9,719,909.70 × 6,231,107.80 - Step 4: Simplify right side
6,479,939.80x = 60,565,805,146,965.66 - Step 5: Solve for x
x = 60,565,805,146,965.66/6,479,939.80 - Step 6: Final answer
x = 9,346,661.70
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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.