Finding the Fourth Proportional to 639,161.16, 882,361.74 and 397,521.63
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Solution
The fourth proportional to 639,161.16, 882,361.74 and 397,521.63 is: 548,778.46
Step by Step Solution
- Step 1: Write the proportion equation
639,161.16 : 882,361.74 = 397,521.63 : x - Step 2: Convert to fraction form
639,161.16/882,361.74 = 397,521.63/x - Step 3: Cross multiply
639,161.16x = 882,361.74 × 397,521.63 - Step 4: Simplify right side
639,161.16x = 350,757,877,134.44 - Step 5: Solve for x
x = 350,757,877,134.44/639,161.16 - Step 6: Final answer
x = 548,778.46
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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.