Finding the Fourth Proportional to 639,338.72, 882,283.09 and 352,858.80
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Solution
The fourth proportional to 639,338.72, 882,283.09 and 352,858.80 is: 486,942.75
Step by Step Solution
- Step 1: Write the proportion equation
639,338.72 : 882,283.09 = 352,858.80 : x - Step 2: Convert to fraction form
639,338.72/882,283.09 = 352,858.80/x - Step 3: Cross multiply
639,338.72x = 882,283.09 × 352,858.80 - Step 4: Simplify right side
639,338.72x = 311,321,350,633.40 - Step 5: Solve for x
x = 311,321,350,633.40/639,338.72 - Step 6: Final answer
x = 486,942.75
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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.