Finding the Fourth Proportional to 620,440.20, 930,660.30 and 407,863.80
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Solution
The fourth proportional to 620,440.20, 930,660.30 and 407,863.80 is: 611,795.70
Step by Step Solution
- Step 1: Write the proportion equation
620,440.20 : 930,660.30 = 407,863.80 : x - Step 2: Convert to fraction form
620,440.20/930,660.30 = 407,863.80/x - Step 3: Cross multiply
620,440.20x = 930,660.30 × 407,863.80 - Step 4: Simplify right side
620,440.20x = 379,582,646,467.14 - Step 5: Solve for x
x = 379,582,646,467.14/620,440.20 - Step 6: Final answer
x = 611,795.70
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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.