Finding the Fourth Proportional to 639,660.30, 882,744.98 and 353,198.49
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Solution
The fourth proportional to 639,660.30, 882,744.98 and 353,198.49 is: 487,421.51
Step by Step Solution
- Step 1: Write the proportion equation
639,660.30 : 882,744.98 = 353,198.49 : x - Step 2: Convert to fraction form
639,660.30/882,744.98 = 353,198.49/x - Step 3: Cross multiply
639,660.30x = 882,744.98 × 353,198.49 - Step 4: Simplify right side
639,660.30x = 311,784,192,225.09 - Step 5: Solve for x
x = 311,784,192,225.09/639,660.30 - Step 6: Final answer
x = 487,421.51
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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.