Finding the Fourth Proportional to 427,733.40, 640,217.70 and 394,555.80
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Solution
The fourth proportional to 427,733.40, 640,217.70 and 394,555.80 is: 590,558.53
Step by Step Solution
- Step 1: Write the proportion equation
427,733.40 : 640,217.70 = 394,555.80 : x - Step 2: Convert to fraction form
427,733.40/640,217.70 = 394,555.80/x - Step 3: Cross multiply
427,733.40x = 640,217.70 × 394,555.80 - Step 4: Simplify right side
427,733.40x = 252,601,606,797.66 - Step 5: Solve for x
x = 252,601,606,797.66/427,733.40 - Step 6: Final answer
x = 590,558.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.