Finding the Fourth Proportional to 639,105.97, 881,965.58 and 352,626.03
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Solution
The fourth proportional to 639,105.97, 881,965.58 and 352,626.03 is: 486,623.56
Step by Step Solution
- Step 1: Write the proportion equation
639,105.97 : 881,965.58 = 352,626.03 : x - Step 2: Convert to fraction form
639,105.97/881,965.58 = 352,626.03/x - Step 3: Cross multiply
639,105.97x = 881,965.58 × 352,626.03 - Step 4: Simplify right side
639,105.97x = 311,004,019,308.92 - Step 5: Solve for x
x = 311,004,019,308.92/639,105.97 - Step 6: Final answer
x = 486,623.56
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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.