Finding the Fourth Proportional to 412,081.75, 620,930.63 and 338,842.63
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Solution
The fourth proportional to 412,081.75, 620,930.63 and 338,842.63 is: 510,572.88
Step by Step Solution
- Step 1: Write the proportion equation
412,081.75 : 620,930.63 = 338,842.63 : x - Step 2: Convert to fraction form
412,081.75/620,930.63 = 338,842.63/x - Step 3: Cross multiply
412,081.75x = 620,930.63 × 338,842.63 - Step 4: Simplify right side
412,081.75x = 210,397,767,716.76 - Step 5: Solve for x
x = 210,397,767,716.76/412,081.75 - Step 6: Final answer
x = 510,572.88
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.