Finding the Fourth Proportional to 394,889.76, 592,334.20 and 128,649.84
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Solution
The fourth proportional to 394,889.76, 592,334.20 and 128,649.84 is: 192,974.62
Step by Step Solution
- Step 1: Write the proportion equation
394,889.76 : 592,334.20 = 128,649.84 : x - Step 2: Convert to fraction form
394,889.76/592,334.20 = 128,649.84/x - Step 3: Cross multiply
394,889.76x = 592,334.20 × 128,649.84 - Step 4: Simplify right side
394,889.76x = 76,203,700,056.53 - Step 5: Solve for x
x = 76,203,700,056.53/394,889.76 - Step 6: Final answer
x = 192,974.62
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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.