Finding the Fourth Proportional to 641,945.99, 885,874.60 and 355,459.92
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Solution
The fourth proportional to 641,945.99, 885,874.60 and 355,459.92 is: 490,528.68
Step by Step Solution
- Step 1: Write the proportion equation
641,945.99 : 885,874.60 = 355,459.92 : x - Step 2: Convert to fraction form
641,945.99/885,874.60 = 355,459.92/x - Step 3: Cross multiply
641,945.99x = 885,874.60 × 355,459.92 - Step 4: Simplify right side
641,945.99x = 314,892,913,557.38 - Step 5: Solve for x
x = 314,892,913,557.38/641,945.99 - Step 6: Final answer
x = 490,528.68
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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.