Finding the Fourth Proportional to 639,343.61, 882,289.84 and 352,863.69
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Solution
The fourth proportional to 639,343.61, 882,289.84 and 352,863.69 is: 486,949.50
Step by Step Solution
- Step 1: Write the proportion equation
639,343.61 : 882,289.84 = 352,863.69 : x - Step 2: Convert to fraction form
639,343.61/882,289.84 = 352,863.69/x - Step 3: Cross multiply
639,343.61x = 882,289.84 × 352,863.69 - Step 4: Simplify right side
639,343.61x = 311,328,048,591.91 - Step 5: Solve for x
x = 311,328,048,591.91/639,343.61 - Step 6: Final answer
x = 486,949.50
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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.