Finding the Fourth Proportional to 389,556.74, 584,438.79 and 123,322.70
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Solution
The fourth proportional to 389,556.74, 584,438.79 and 123,322.70 is: 185,016.88
Step by Step Solution
- Step 1: Write the proportion equation
389,556.74 : 584,438.79 = 123,322.70 : x - Step 2: Convert to fraction form
389,556.74/584,438.79 = 123,322.70/x - Step 3: Cross multiply
389,556.74x = 584,438.79 × 123,322.70 - Step 4: Simplify right side
389,556.74x = 72,074,571,491.09 - Step 5: Solve for x
x = 72,074,571,491.09/389,556.74 - Step 6: Final answer
x = 185,016.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.