Finding the Fourth Proportional to 485,682.75, 670,242.21 and 284,478.75
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Solution
The fourth proportional to 485,682.75, 670,242.21 and 284,478.75 is: 392,580.68
Step by Step Solution
- Step 1: Write the proportion equation
485,682.75 : 670,242.21 = 284,478.75 : x - Step 2: Convert to fraction form
485,682.75/670,242.21 = 284,478.75/x - Step 3: Cross multiply
485,682.75x = 670,242.21 × 284,478.75 - Step 4: Simplify right side
485,682.75x = 190,669,666,098.04 - Step 5: Solve for x
x = 190,669,666,098.04/485,682.75 - Step 6: Final answer
x = 392,580.68
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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.