Finding the Fourth Proportional to 870,682.09, 1,201,475.42 and 488,635.06
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Solution
The fourth proportional to 870,682.09, 1,201,475.42 and 488,635.06 is: 674,279.42
Step by Step Solution
- Step 1: Write the proportion equation
870,682.09 : 1,201,475.42 = 488,635.06 : x - Step 2: Convert to fraction form
870,682.09/1,201,475.42 = 488,635.06/x - Step 3: Cross multiply
870,682.09x = 1,201,475.42 × 488,635.06 - Step 4: Simplify right side
870,682.09x = 587,083,013,940.23 - Step 5: Solve for x
x = 587,083,013,940.23/870,682.09 - Step 6: Final answer
x = 674,279.42
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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.