Finding the Fourth Proportional to 790,783.50, 1,091,286.42 and 428,207.38
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Solution
The fourth proportional to 790,783.50, 1,091,286.42 and 428,207.38 is: 590,928.99
Step by Step Solution
- Step 1: Write the proportion equation
790,783.50 : 1,091,286.42 = 428,207.38 : x - Step 2: Convert to fraction form
790,783.50/1,091,286.42 = 428,207.38/x - Step 3: Cross multiply
790,783.50x = 1,091,286.42 × 428,207.38 - Step 4: Simplify right side
790,783.50x = 467,296,898,737.78 - Step 5: Solve for x
x = 467,296,898,737.78/790,783.50 - Step 6: Final answer
x = 590,928.99
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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.