Finding the Fourth Proportional to 812,445.68, 1,121,161.37 and 449,861.74
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Solution
The fourth proportional to 812,445.68, 1,121,161.37 and 449,861.74 is: 620,801.63
Step by Step Solution
- Step 1: Write the proportion equation
812,445.68 : 1,121,161.37 = 449,861.74 : x - Step 2: Convert to fraction form
812,445.68/1,121,161.37 = 449,861.74/x - Step 3: Cross multiply
812,445.68x = 1,121,161.37 × 449,861.74 - Step 4: Simplify right side
812,445.68x = 504,367,603,050.74 - Step 5: Solve for x
x = 504,367,603,050.74/812,445.68 - Step 6: Final answer
x = 620,801.63
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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.