Finding the Fourth Proportional to 681,628.64, 940,651.26 and 395,318.48
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Solution
The fourth proportional to 681,628.64, 940,651.26 and 395,318.48 is: 545,541.67
Step by Step Solution
- Step 1: Write the proportion equation
681,628.64 : 940,651.26 = 395,318.48 : x - Step 2: Convert to fraction form
681,628.64/940,651.26 = 395,318.48/x - Step 3: Cross multiply
681,628.64x = 940,651.26 × 395,318.48 - Step 4: Simplify right side
681,628.64x = 371,856,826,313.29 - Step 5: Solve for x
x = 371,856,826,313.29/681,628.64 - Step 6: Final answer
x = 545,541.67
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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.