Finding the Fourth Proportional to 638,425.23, 881,029.49 and 351,939.03
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Solution
The fourth proportional to 638,425.23, 881,029.49 and 351,939.03 is: 485,677.33
Step by Step Solution
- Step 1: Write the proportion equation
638,425.23 : 881,029.49 = 351,939.03 : x - Step 2: Convert to fraction form
638,425.23/881,029.49 = 351,939.03/x - Step 3: Cross multiply
638,425.23x = 881,029.49 × 351,939.03 - Step 4: Simplify right side
638,425.23x = 310,068,664,112.00 - Step 5: Solve for x
x = 310,068,664,112.00/638,425.23 - Step 6: Final answer
x = 485,677.33
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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.