Finding the Fourth Proportional to 812,720.70, 1,219,161.24 and 280,171.62
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Solution
The fourth proportional to 812,720.70, 1,219,161.24 and 280,171.62 is: 420,285.07
Step by Step Solution
- Step 1: Write the proportion equation
812,720.70 : 1,219,161.24 = 280,171.62 : x - Step 2: Convert to fraction form
812,720.70/1,219,161.24 = 280,171.62/x - Step 3: Cross multiply
812,720.70x = 1,219,161.24 × 280,171.62 - Step 4: Simplify right side
812,720.70x = 341,574,379,652.01 - Step 5: Solve for x
x = 341,574,379,652.01/812,720.70 - Step 6: Final answer
x = 420,285.07
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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.