Finding the Fourth Proportional to 717,236.75, 989,786.72 and 394,946.15
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Solution
The fourth proportional to 717,236.75, 989,786.72 and 394,946.15 is: 545,025.69
Step by Step Solution
- Step 1: Write the proportion equation
717,236.75 : 989,786.72 = 394,946.15 : x - Step 2: Convert to fraction form
717,236.75/989,786.72 = 394,946.15/x - Step 3: Cross multiply
717,236.75x = 989,786.72 × 394,946.15 - Step 4: Simplify right side
717,236.75x = 390,912,452,410.40 - Step 5: Solve for x
x = 390,912,452,410.40/717,236.75 - Step 6: Final answer
x = 545,025.69
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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.