Finding the Fourth Proportional to 658,163.20, 908,355.42 and 378,754.65
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Solution
The fourth proportional to 658,163.20, 908,355.42 and 378,754.65 is: 522,733.33
Step by Step Solution
- Step 1: Write the proportion equation
658,163.20 : 908,355.42 = 378,754.65 : x - Step 2: Convert to fraction form
658,163.20/908,355.42 = 378,754.65/x - Step 3: Cross multiply
658,163.20x = 908,355.42 × 378,754.65 - Step 4: Simplify right side
658,163.20x = 344,043,839,177.70 - Step 5: Solve for x
x = 344,043,839,177.70/658,163.20 - Step 6: Final answer
x = 522,733.33
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1.5x scale
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.