Finding the Fourth Proportional to 641,721.07, 885,582.08 and 355,245.94
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Solution
The fourth proportional to 641,721.07, 885,582.08 and 355,245.94 is: 490,243.27
Step by Step Solution
- Step 1: Write the proportion equation
641,721.07 : 885,582.08 = 355,245.94 : x - Step 2: Convert to fraction form
641,721.07/885,582.08 = 355,245.94/x - Step 3: Cross multiply
641,721.07x = 885,582.08 × 355,245.94 - Step 4: Simplify right side
641,721.07x = 314,599,436,680.53 - Step 5: Solve for x
x = 314,599,436,680.53/641,721.07 - Step 6: Final answer
x = 490,243.27
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1.5x scale
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.