Finding the Fourth Proportional to 3,938,217.21, 5,905,193.49 and 1,776,716.28
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Solution
The fourth proportional to 3,938,217.21, 5,905,193.49 and 1,776,716.28 is: 2,664,112.43
Step by Step Solution
- Step 1: Write the proportion equation
3,938,217.21 : 5,905,193.49 = 1,776,716.28 : x - Step 2: Convert to fraction form
3,938,217.21/5,905,193.49 = 1,776,716.28/x - Step 3: Cross multiply
3,938,217.21x = 5,905,193.49 × 1,776,716.28 - Step 4: Simplify right side
3,938,217.21x = 10,491,853,410,233.02 - Step 5: Solve for x
x = 10,491,853,410,233.02/3,938,217.21 - Step 6: Final answer
x = 2,664,112.43
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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.