Finding the Fourth Proportional to 641,713.87, 885,571.69 and 355,227.80
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Solution
The fourth proportional to 641,713.87, 885,571.69 and 355,227.80 is: 490,217.99
Step by Step Solution
- Step 1: Write the proportion equation
641,713.87 : 885,571.69 = 355,227.80 : x - Step 2: Convert to fraction form
641,713.87/885,571.69 = 355,227.80/x - Step 3: Cross multiply
641,713.87x = 885,571.69 × 355,227.80 - Step 4: Simplify right side
641,713.87x = 314,579,683,180.98 - Step 5: Solve for x
x = 314,579,683,180.98/641,713.87 - Step 6: Final answer
x = 490,217.99
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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.