Finding the Fourth Proportional to 408,756.84, 613,260.12 and 209,218.62
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Solution
The fourth proportional to 408,756.84, 613,260.12 and 209,218.62 is: 313,891.84
Step by Step Solution
- Step 1: Write the proportion equation
408,756.84 : 613,260.12 = 209,218.62 : x - Step 2: Convert to fraction form
408,756.84/613,260.12 = 209,218.62/x - Step 3: Cross multiply
408,756.84x = 613,260.12 × 209,218.62 - Step 4: Simplify right side
408,756.84x = 128,305,436,007.43 - Step 5: Solve for x
x = 128,305,436,007.43/408,756.84 - Step 6: Final answer
x = 313,891.84
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.