Finding the Fourth Proportional to 657,115.70, 985,673.55 and 447,163.70
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Solution
The fourth proportional to 657,115.70, 985,673.55 and 447,163.70 is: 670,745.55
Step by Step Solution
- Step 1: Write the proportion equation
657,115.70 : 985,673.55 = 447,163.70 : x - Step 2: Convert to fraction form
657,115.70/985,673.55 = 447,163.70/x - Step 3: Cross multiply
657,115.70x = 985,673.55 × 447,163.70 - Step 4: Simplify right side
657,115.70x = 440,757,431,610.14 - Step 5: Solve for x
x = 440,757,431,610.14/657,115.70 - Step 6: Final answer
x = 670,745.55
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1.5x scale
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.