Finding the Fourth Proportional to 812,722.20, 1,219,163.49 and 280,173.12
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Solution
The fourth proportional to 812,722.20, 1,219,163.49 and 280,173.12 is: 420,287.32
Step by Step Solution
- Step 1: Write the proportion equation
812,722.20 : 1,219,163.49 = 280,173.12 : x - Step 2: Convert to fraction form
812,722.20/1,219,163.49 = 280,173.12/x - Step 3: Cross multiply
812,722.20x = 1,219,163.49 × 280,173.12 - Step 4: Simplify right side
812,722.20x = 341,576,838,783.39 - Step 5: Solve for x
x = 341,576,838,783.39/812,722.20 - Step 6: Final answer
x = 420,287.32
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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.