Finding the Fourth Proportional to 639,641.05, 882,698.68 and 353,163.17
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Solution
The fourth proportional to 639,641.05, 882,698.68 and 353,163.17 is: 487,361.88
Step by Step Solution
- Step 1: Write the proportion equation
639,641.05 : 882,698.68 = 353,163.17 : x - Step 2: Convert to fraction form
639,641.05/882,698.68 = 353,163.17/x - Step 3: Cross multiply
639,641.05x = 882,698.68 × 353,163.17 - Step 4: Simplify right side
639,641.05x = 311,736,663,983.62 - Step 5: Solve for x
x = 311,736,663,983.62/639,641.05 - Step 6: Final answer
x = 487,361.88
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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.