Finding the Fourth Proportional to 812,469.01, 1,121,193.53 and 449,885.08
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Solution
The fourth proportional to 812,469.01, 1,121,193.53 and 449,885.08 is: 620,833.82
Step by Step Solution
- Step 1: Write the proportion equation
812,469.01 : 1,121,193.53 = 449,885.08 : x - Step 2: Convert to fraction form
812,469.01/1,121,193.53 = 449,885.08/x - Step 3: Cross multiply
812,469.01x = 1,121,193.53 × 449,885.08 - Step 4: Simplify right side
812,469.01x = 504,408,240,939.53 - Step 5: Solve for x
x = 504,408,240,939.53/812,469.01 - Step 6: Final answer
x = 620,833.82
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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.