Finding the Fourth Proportional to 639,589.96, 882,631.70 and 353,107.99
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Solution
The fourth proportional to 639,589.96, 882,631.70 and 353,107.99 is: 487,287.68
Step by Step Solution
- Step 1: Write the proportion equation
639,589.96 : 882,631.70 = 353,107.99 : x - Step 2: Convert to fraction form
639,589.96/882,631.70 = 353,107.99/x - Step 3: Cross multiply
639,589.96x = 882,631.70 × 353,107.99 - Step 4: Simplify right side
639,589.96x = 311,664,306,159.19 - Step 5: Solve for x
x = 311,664,306,159.19/639,589.96 - Step 6: Final answer
x = 487,287.68
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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.