Finding the Fourth Proportional to 2,148,745.28, 2,965,689.71 and 1,231,589.13
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Solution
The fourth proportional to 2,148,745.28, 2,965,689.71 and 1,231,589.13 is: 1,699,834.43
Step by Step Solution
- Step 1: Write the proportion equation
2,148,745.28 : 2,965,689.71 = 1,231,589.13 : x - Step 2: Convert to fraction form
2,148,745.28/2,965,689.71 = 1,231,589.13/x - Step 3: Cross multiply
2,148,745.28x = 2,965,689.71 × 1,231,589.13 - Step 4: Simplify right side
2,148,745.28x = 3,652,511,203,630.91 - Step 5: Solve for x
x = 3,652,511,203,630.91/2,148,745.28 - Step 6: Final answer
x = 1,699,834.43
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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.