Finding the Fourth Proportional to 638,892.26, 959,423.06 and 427,021.68
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Solution
The fourth proportional to 638,892.26, 959,423.06 and 427,021.68 is: 641,257.49
Step by Step Solution
- Step 1: Write the proportion equation
638,892.26 : 959,423.06 = 427,021.68 : x - Step 2: Convert to fraction form
638,892.26/959,423.06 = 427,021.68/x - Step 3: Cross multiply
638,892.26x = 959,423.06 × 427,021.68 - Step 4: Simplify right side
638,892.26x = 409,694,444,776.83 - Step 5: Solve for x
x = 409,694,444,776.83/638,892.26 - Step 6: Final answer
x = 641,257.49
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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.