Finding the Fourth Proportional to 678,846.96, 936,704.76 and 392,311.75
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Solution
The fourth proportional to 678,846.96, 936,704.76 and 392,311.75 is: 541,330.09
Step by Step Solution
- Step 1: Write the proportion equation
678,846.96 : 936,704.76 = 392,311.75 : x - Step 2: Convert to fraction form
678,846.96/936,704.76 = 392,311.75/x - Step 3: Cross multiply
678,846.96x = 936,704.76 × 392,311.75 - Step 4: Simplify right side
678,846.96x = 367,480,283,628.93 - Step 5: Solve for x
x = 367,480,283,628.93/678,846.96 - Step 6: Final answer
x = 541,330.09
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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.