Finding the Fourth Proportional to 12,431,643.05, 18,650,349.36 and 3,911,758.09
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Solution
The fourth proportional to 12,431,643.05, 18,650,349.36 and 3,911,758.09 is: 5,868,544.87
Step by Step Solution
- Step 1: Write the proportion equation
12,431,643.05 : 18,650,349.36 = 3,911,758.09 : x - Step 2: Convert to fraction form
12,431,643.05/18,650,349.36 = 3,911,758.09/x - Step 3: Cross multiply
12,431,643.05x = 18,650,349.36 × 3,911,758.09 - Step 4: Simplify right side
12,431,643.05x = 72,955,654,990,306.31 - Step 5: Solve for x
x = 72,955,654,990,306.31/12,431,643.05 - Step 6: Final answer
x = 5,868,544.87
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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.