Finding the Fourth Proportional to 393,147.74, 541,420.84 and 354,052.68
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Solution
The fourth proportional to 393,147.74, 541,420.84 and 354,052.68 is: 487,581.34
Step by Step Solution
- Step 1: Write the proportion equation
393,147.74 : 541,420.84 = 354,052.68 : x - Step 2: Convert to fraction form
393,147.74/541,420.84 = 354,052.68/x - Step 3: Cross multiply
393,147.74x = 541,420.84 × 354,052.68 - Step 4: Simplify right side
393,147.74x = 191,691,498,524.72 - Step 5: Solve for x
x = 191,691,498,524.72/393,147.74 - Step 6: Final answer
x = 487,581.34
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1.5x scale
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.