Finding the Fourth Proportional to 7,166,418.75, 9,889,658.00 and 3,947,154.75
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Solution
The fourth proportional to 7,166,418.75, 9,889,658.00 and 3,947,154.75 is: 5,447,073.62
Step by Step Solution
- Step 1: Write the proportion equation
7,166,418.75 : 9,889,658.00 = 3,947,154.75 : x - Step 2: Convert to fraction form
7,166,418.75/9,889,658.00 = 3,947,154.75/x - Step 3: Cross multiply
7,166,418.75x = 9,889,658.00 × 3,947,154.75 - Step 4: Simplify right side
7,166,418.75x = 39,036,010,530,839.73 - Step 5: Solve for x
x = 39,036,010,530,839.73/7,166,418.75 - Step 6: Final answer
x = 5,447,073.62
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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.