Finding the Fourth Proportional to 678,845.96, 936,703.38 and 392,310.75
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Solution
The fourth proportional to 678,845.96, 936,703.38 and 392,310.75 is: 541,328.71
Step by Step Solution
- Step 1: Write the proportion equation
678,845.96 : 936,703.38 = 392,310.75 : x - Step 2: Convert to fraction form
678,845.96/936,703.38 = 392,310.75/x - Step 3: Cross multiply
678,845.96x = 936,703.38 × 392,310.75 - Step 4: Simplify right side
678,845.96x = 367,478,810,519.14 - Step 5: Solve for x
x = 367,478,810,519.14/678,845.96 - Step 6: Final answer
x = 541,328.71
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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.