Finding the Fourth Proportional to 720,893.21, 994,837.70 and 394,207.65
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Solution
The fourth proportional to 720,893.21, 994,837.70 and 394,207.65 is: 544,009.33
Step by Step Solution
- Step 1: Write the proportion equation
720,893.21 : 994,837.70 = 394,207.65 : x - Step 2: Convert to fraction form
720,893.21/994,837.70 = 394,207.65/x - Step 3: Cross multiply
720,893.21x = 994,837.70 × 394,207.65 - Step 4: Simplify right side
720,893.21x = 392,172,629,877.37 - Step 5: Solve for x
x = 392,172,629,877.37/720,893.21 - Step 6: Final answer
x = 544,009.33
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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.