Finding the Fourth Proportional to 512,279.36, 706,916.76 and 285,939.44
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Solution
The fourth proportional to 512,279.36, 706,916.76 and 285,939.44 is: 394,580.38
Step by Step Solution
- Step 1: Write the proportion equation
512,279.36 : 706,916.76 = 285,939.44 : x - Step 2: Convert to fraction form
512,279.36/706,916.76 = 285,939.44/x - Step 3: Cross multiply
512,279.36x = 706,916.76 × 285,939.44 - Step 4: Simplify right side
512,279.36x = 202,135,382,481.01 - Step 5: Solve for x
x = 202,135,382,481.01/512,279.36 - Step 6: Final answer
x = 394,580.38
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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.