Finding the Fourth Proportional to 685,071.36, 1,027,705.49 and 211,793.63
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Solution
The fourth proportional to 685,071.36, 1,027,705.49 and 211,793.63 is: 317,720.87
Step by Step Solution
- Step 1: Write the proportion equation
685,071.36 : 1,027,705.49 = 211,793.63 : x - Step 2: Convert to fraction form
685,071.36/1,027,705.49 = 211,793.63/x - Step 3: Cross multiply
685,071.36x = 1,027,705.49 × 211,793.63 - Step 4: Simplify right side
685,071.36x = 217,661,470,894.76 - Step 5: Solve for x
x = 217,661,470,894.76/685,071.36 - Step 6: Final answer
x = 317,720.87
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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.