Finding the Fourth Proportional to 639,028.64, 881,864.92 and 352,568.09
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Solution
The fourth proportional to 639,028.64, 881,864.92 and 352,568.09 is: 486,546.94
Step by Step Solution
- Step 1: Write the proportion equation
639,028.64 : 881,864.92 = 352,568.09 : x - Step 2: Convert to fraction form
639,028.64/881,864.92 = 352,568.09/x - Step 3: Cross multiply
639,028.64x = 881,864.92 × 352,568.09 - Step 4: Simplify right side
639,028.64x = 310,917,433,127.78 - Step 5: Solve for x
x = 310,917,433,127.78/639,028.64 - Step 6: Final answer
x = 486,546.94
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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.