Finding the Fourth Proportional to 542,408.80, 813,613.20 and 343,343.20
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Solution
The fourth proportional to 542,408.80, 813,613.20 and 343,343.20 is: 515,014.80
Step by Step Solution
- Step 1: Write the proportion equation
542,408.80 : 813,613.20 = 343,343.20 : x - Step 2: Convert to fraction form
542,408.80/813,613.20 = 343,343.20/x - Step 3: Cross multiply
542,408.80x = 813,613.20 × 343,343.20 - Step 4: Simplify right side
542,408.80x = 279,348,559,650.24 - Step 5: Solve for x
x = 279,348,559,650.24/542,408.80 - Step 6: Final answer
x = 515,014.80
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Similar ratio
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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.