Finding the Fourth Proportional to 638,456.76, 881,076.33 and 351,987.09
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Solution
The fourth proportional to 638,456.76, 881,076.33 and 351,987.09 is: 485,745.49
Step by Step Solution
- Step 1: Write the proportion equation
638,456.76 : 881,076.33 = 351,987.09 : x - Step 2: Convert to fraction form
638,456.76/881,076.33 = 351,987.09/x - Step 3: Cross multiply
638,456.76x = 881,076.33 × 351,987.09 - Step 4: Simplify right side
638,456.76x = 310,127,493,464.58 - Step 5: Solve for x
x = 310,127,493,464.58/638,456.76 - Step 6: Final answer
x = 485,745.49
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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.