Finding the Fourth Proportional to 641,640.36, 885,660.84 and 369,889.92
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Solution
The fourth proportional to 641,640.36, 885,660.84 and 369,889.92 is: 510,561.74
Step by Step Solution
- Step 1: Write the proportion equation
641,640.36 : 885,660.84 = 369,889.92 : x - Step 2: Convert to fraction form
641,640.36/885,660.84 = 369,889.92/x - Step 3: Cross multiply
641,640.36x = 885,660.84 × 369,889.92 - Step 4: Simplify right side
641,640.36x = 327,597,017,254.73 - Step 5: Solve for x
x = 327,597,017,254.73/641,640.36 - Step 6: Final answer
x = 510,561.74
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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.