Finding the Fourth Proportional to 757,287.70, 1,136,701.80 and 378,480.21
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Solution
The fourth proportional to 757,287.70, 1,136,701.80 and 378,480.21 is: 568,105.27
Step by Step Solution
- Step 1: Write the proportion equation
757,287.70 : 1,136,701.80 = 378,480.21 : x - Step 2: Convert to fraction form
757,287.70/1,136,701.80 = 378,480.21/x - Step 3: Cross multiply
757,287.70x = 1,136,701.80 × 378,480.21 - Step 4: Simplify right side
757,287.70x = 430,219,135,971.38 - Step 5: Solve for x
x = 430,219,135,971.38/757,287.70 - Step 6: Final answer
x = 568,105.27
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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.