Finding the Fourth Proportional to 3,939,764.40, 5,436,958.68 and 2,220,884.46
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Solution
The fourth proportional to 3,939,764.40, 5,436,958.68 and 2,220,884.46 is: 3,064,867.80
Step by Step Solution
- Step 1: Write the proportion equation
3,939,764.40 : 5,436,958.68 = 2,220,884.46 : x - Step 2: Convert to fraction form
3,939,764.40/5,436,958.68 = 2,220,884.46/x - Step 3: Cross multiply
3,939,764.40x = 5,436,958.68 × 2,220,884.46 - Step 4: Simplify right side
3,939,764.40x = 12,074,857,042,074.11 - Step 5: Solve for x
x = 12,074,857,042,074.11/3,939,764.40 - Step 6: Final answer
x = 3,064,867.80
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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.