Finding the Fourth Proportional to 7,250,431.81, 10,005,396.37 and 3,987,246.54
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Solution
The fourth proportional to 7,250,431.81, 10,005,396.37 and 3,987,246.54 is: 5,502,290.50
Step by Step Solution
- Step 1: Write the proportion equation
7,250,431.81 : 10,005,396.37 = 3,987,246.54 : x - Step 2: Convert to fraction form
7,250,431.81/10,005,396.37 = 3,987,246.54/x - Step 3: Cross multiply
7,250,431.81x = 10,005,396.37 × 3,987,246.54 - Step 4: Simplify right side
7,250,431.81x = 39,893,982,057,611.05 - Step 5: Solve for x
x = 39,893,982,057,611.05/7,250,431.81 - Step 6: Final answer
x = 5,502,290.50
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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.