Finding the Fourth Proportional to 374,453.20, 561,679.80 and 285,879.70
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Solution
The fourth proportional to 374,453.20, 561,679.80 and 285,879.70 is: 428,819.55
Step by Step Solution
- Step 1: Write the proportion equation
374,453.20 : 561,679.80 = 285,879.70 : x - Step 2: Convert to fraction form
374,453.20/561,679.80 = 285,879.70/x - Step 3: Cross multiply
374,453.20x = 561,679.80 × 285,879.70 - Step 4: Simplify right side
374,453.20x = 160,572,852,720.06 - Step 5: Solve for x
x = 160,572,852,720.06/374,453.20 - Step 6: Final answer
x = 428,819.55
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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.