Finding the Fourth Proportional to 639,639.30, 882,716.00 and 353,177.49
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Solution
The fourth proportional to 639,639.30, 882,716.00 and 353,177.49 is: 487,392.53
Step by Step Solution
- Step 1: Write the proportion equation
639,639.30 : 882,716.00 = 353,177.49 : x - Step 2: Convert to fraction form
639,639.30/882,716.00 = 353,177.49/x - Step 3: Cross multiply
639,639.30x = 882,716.00 × 353,177.49 - Step 4: Simplify right side
639,639.30x = 311,755,419,496.95 - Step 5: Solve for x
x = 311,755,419,496.95/639,639.30 - Step 6: Final answer
x = 487,392.53
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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.