Finding the Fourth Proportional to 638,745.78, 958,118.80 and 259,872.68
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Solution
The fourth proportional to 638,745.78, 958,118.80 and 259,872.68 is: 389,809.07
Step by Step Solution
- Step 1: Write the proportion equation
638,745.78 : 958,118.80 = 259,872.68 : x - Step 2: Convert to fraction form
638,745.78/958,118.80 = 259,872.68/x - Step 3: Cross multiply
638,745.78x = 958,118.80 × 259,872.68 - Step 4: Simplify right side
638,745.78x = 248,988,900,314.38 - Step 5: Solve for x
x = 248,988,900,314.38/638,745.78 - Step 6: Final answer
x = 389,809.07
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.