Finding the Fourth Proportional to 639,516.05, 882,509.02 and 353,029.99
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Solution
The fourth proportional to 639,516.05, 882,509.02 and 353,029.99 is: 487,168.62
Step by Step Solution
- Step 1: Write the proportion equation
639,516.05 : 882,509.02 = 353,029.99 : x - Step 2: Convert to fraction form
639,516.05/882,509.02 = 353,029.99/x - Step 3: Cross multiply
639,516.05x = 882,509.02 × 353,029.99 - Step 4: Simplify right side
639,516.05x = 311,552,150,505.51 - Step 5: Solve for x
x = 311,552,150,505.51/639,516.05 - Step 6: Final answer
x = 487,168.62
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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.