Finding the Fourth Proportional to 379,609.44, 523,941.12 and 315,885.12
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Solution
The fourth proportional to 379,609.44, 523,941.12 and 315,885.12 is: 435,988.11
Step by Step Solution
- Step 1: Write the proportion equation
379,609.44 : 523,941.12 = 315,885.12 : x - Step 2: Convert to fraction form
379,609.44/523,941.12 = 315,885.12/x - Step 3: Cross multiply
379,609.44x = 523,941.12 × 315,885.12 - Step 4: Simplify right side
379,609.44x = 165,505,203,564.13 - Step 5: Solve for x
x = 165,505,203,564.13/379,609.44 - Step 6: Final answer
x = 435,988.11
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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.