Finding the Fourth Proportional to 428,314.07, 641,937.99 and 276,109.80
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Solution
The fourth proportional to 428,314.07, 641,937.99 and 276,109.80 is: 413,821.03
Step by Step Solution
- Step 1: Write the proportion equation
428,314.07 : 641,937.99 = 276,109.80 : x - Step 2: Convert to fraction form
428,314.07/641,937.99 = 276,109.80/x - Step 3: Cross multiply
428,314.07x = 641,937.99 × 276,109.80 - Step 4: Simplify right side
428,314.07x = 177,245,370,031.30 - Step 5: Solve for x
x = 177,245,370,031.30/428,314.07 - Step 6: Final answer
x = 413,821.03
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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.