Finding the Fourth Proportional to 644,578.20, 967,013.10 and 378,201.60
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Solution
The fourth proportional to 644,578.20, 967,013.10 and 378,201.60 is: 567,387.95
Step by Step Solution
- Step 1: Write the proportion equation
644,578.20 : 967,013.10 = 378,201.60 : x - Step 2: Convert to fraction form
644,578.20/967,013.10 = 378,201.60/x - Step 3: Cross multiply
644,578.20x = 967,013.10 × 378,201.60 - Step 4: Simplify right side
644,578.20x = 365,725,901,640.96 - Step 5: Solve for x
x = 365,725,901,640.96/644,578.20 - Step 6: Final answer
x = 567,387.95
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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.