Finding the Fourth Proportional to 7,771,040.78, 11,660,491.62 and 5,179,114.14
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Solution
The fourth proportional to 7,771,040.78, 11,660,491.62 and 5,179,114.14 is: 7,771,290.72
Step by Step Solution
- Step 1: Write the proportion equation
7,771,040.78 : 11,660,491.62 = 5,179,114.14 : x - Step 2: Convert to fraction form
7,771,040.78/11,660,491.62 = 5,179,114.14/x - Step 3: Cross multiply
7,771,040.78x = 11,660,491.62 × 5,179,114.14 - Step 4: Simplify right side
7,771,040.78x = 60,391,017,028,493.50 - Step 5: Solve for x
x = 60,391,017,028,493.50/7,771,040.78 - Step 6: Final answer
x = 7,771,290.72
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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.