Finding the Fourth Proportional to 498,995.75, 688,620.72 and 284,136.68
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Solution
The fourth proportional to 498,995.75, 688,620.72 and 284,136.68 is: 392,112.37
Step by Step Solution
- Step 1: Write the proportion equation
498,995.75 : 688,620.72 = 284,136.68 : x - Step 2: Convert to fraction form
498,995.75/688,620.72 = 284,136.68/x - Step 3: Cross multiply
498,995.75x = 688,620.72 × 284,136.68 - Step 4: Simplify right side
498,995.75x = 195,662,401,716.91 - Step 5: Solve for x
x = 195,662,401,716.91/498,995.75 - Step 6: Final answer
x = 392,112.37
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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.