Finding the Fourth Proportional to 636,367.14, 878,178.78 and 349,884.72
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Solution
The fourth proportional to 636,367.14, 878,178.78 and 349,884.72 is: 482,836.58
Step by Step Solution
- Step 1: Write the proportion equation
636,367.14 : 878,178.78 = 349,884.72 : x - Step 2: Convert to fraction form
636,367.14/878,178.78 = 349,884.72/x - Step 3: Cross multiply
636,367.14x = 878,178.78 × 349,884.72 - Step 4: Simplify right side
636,367.14x = 307,261,336,550.24 - Step 5: Solve for x
x = 307,261,336,550.24/636,367.14 - Step 6: Final answer
x = 482,836.58
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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.