Finding the Fourth Proportional to 768,474.36, 1,152,711.54 and 394,258.68
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Solution
The fourth proportional to 768,474.36, 1,152,711.54 and 394,258.68 is: 591,388.02
Step by Step Solution
- Step 1: Write the proportion equation
768,474.36 : 1,152,711.54 = 394,258.68 : x - Step 2: Convert to fraction form
768,474.36/1,152,711.54 = 394,258.68/x - Step 3: Cross multiply
768,474.36x = 1,152,711.54 × 394,258.68 - Step 4: Simplify right side
768,474.36x = 454,466,530,181.17 - Step 5: Solve for x
x = 454,466,530,181.17/768,474.36 - Step 6: Final answer
x = 591,388.02
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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.