Finding the Fourth Proportional to 3,988,690.88, 5,504,317.62 and 2,439,839.12
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Solution
The fourth proportional to 3,988,690.88, 5,504,317.62 and 2,439,839.12 is: 3,366,931.62
Step by Step Solution
- Step 1: Write the proportion equation
3,988,690.88 : 5,504,317.62 = 2,439,839.12 : x - Step 2: Convert to fraction form
3,988,690.88/5,504,317.62 = 2,439,839.12/x - Step 3: Cross multiply
3,988,690.88x = 5,504,317.62 × 2,439,839.12 - Step 4: Simplify right side
3,988,690.88x = 13,429,649,458,181.29 - Step 5: Solve for x
x = 13,429,649,458,181.29/3,988,690.88 - Step 6: Final answer
x = 3,366,931.62
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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.