Finding the Fourth Proportional to 639,611.11, 882,660.87 and 353,129.09
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Solution
The fourth proportional to 639,611.11, 882,660.87 and 353,129.09 is: 487,316.79
Step by Step Solution
- Step 1: Write the proportion equation
639,611.11 : 882,660.87 = 353,129.09 : x - Step 2: Convert to fraction form
639,611.11/882,660.87 = 353,129.09/x - Step 3: Cross multiply
639,611.11x = 882,660.87 × 353,129.09 - Step 4: Simplify right side
639,611.11x = 311,693,229,801.71 - Step 5: Solve for x
x = 311,693,229,801.71/639,611.11 - Step 6: Final answer
x = 487,316.79
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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.