Finding the Fourth Proportional to 618,538.10, 853,568.12 and 363,905.68
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Solution
The fourth proportional to 618,538.10, 853,568.12 and 363,905.68 is: 502,181.33
Step by Step Solution
- Step 1: Write the proportion equation
618,538.10 : 853,568.12 = 363,905.68 : x - Step 2: Convert to fraction form
618,538.10/853,568.12 = 363,905.68/x - Step 3: Cross multiply
618,538.10x = 853,568.12 × 363,905.68 - Step 4: Simplify right side
618,538.10x = 310,618,287,134.92 - Step 5: Solve for x
x = 310,618,287,134.92/618,538.10 - Step 6: Final answer
x = 502,181.33
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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.