Finding the Fourth Proportional to 3,117,775.20, 4,673,163.60 and 1,320,352.80
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Solution
The fourth proportional to 3,117,775.20, 4,673,163.60 and 1,320,352.80 is: 1,979,047.32
Step by Step Solution
- Step 1: Write the proportion equation
3,117,775.20 : 4,673,163.60 = 1,320,352.80 : x - Step 2: Convert to fraction form
3,117,775.20/4,673,163.60 = 1,320,352.80/x - Step 3: Cross multiply
3,117,775.20x = 4,673,163.60 × 1,320,352.80 - Step 4: Simplify right side
3,117,775.20x = 6,170,224,644,118.08 - Step 5: Solve for x
x = 6,170,224,644,118.08/3,117,775.20 - Step 6: Final answer
x = 1,979,047.32
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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.