Finding the Fourth Proportional to 641,724.38, 885,590.09 and 351,331.05
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Solution
The fourth proportional to 641,724.38, 885,590.09 and 351,331.05 is: 484,842.56
Step by Step Solution
- Step 1: Write the proportion equation
641,724.38 : 885,590.09 = 351,331.05 : x - Step 2: Convert to fraction form
641,724.38/885,590.09 = 351,331.05/x - Step 3: Cross multiply
641,724.38x = 885,590.09 × 351,331.05 - Step 4: Simplify right side
641,724.38x = 311,135,292,092.99 - Step 5: Solve for x
x = 311,135,292,092.99/641,724.38 - Step 6: Final answer
x = 484,842.56
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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.