Finding the Fourth Proportional to 641,835.11, 885,745.97 and 351,458.91
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Solution
The fourth proportional to 641,835.11, 885,745.97 and 351,458.91 is: 485,020.70
Step by Step Solution
- Step 1: Write the proportion equation
641,835.11 : 885,745.97 = 351,458.91 : x - Step 2: Convert to fraction form
641,835.11/885,745.97 = 351,458.91/x - Step 3: Cross multiply
641,835.11x = 885,745.97 × 351,458.91 - Step 4: Simplify right side
641,835.11x = 311,303,311,395.80 - Step 5: Solve for x
x = 311,303,311,395.80/641,835.11 - Step 6: Final answer
x = 485,020.70
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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.