Finding the Fourth Proportional to 640,342.26, 960,478.56 and 324,790.92
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Solution
The fourth proportional to 640,342.26, 960,478.56 and 324,790.92 is: 487,168.71
Step by Step Solution
- Step 1: Write the proportion equation
640,342.26 : 960,478.56 = 324,790.92 : x - Step 2: Convert to fraction form
640,342.26/960,478.56 = 324,790.92/x - Step 3: Cross multiply
640,342.26x = 960,478.56 × 324,790.92 - Step 4: Simplify right side
640,342.26x = 311,954,715,142.68 - Step 5: Solve for x
x = 311,954,715,142.68/640,342.26 - Step 6: Final answer
x = 487,168.71
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1.5x scale
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.