Finding the Fourth Proportional to 912,827.20, 1,369,240.80 and 415,163.20
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Solution
The fourth proportional to 912,827.20, 1,369,240.80 and 415,163.20 is: 622,744.80
Step by Step Solution
- Step 1: Write the proportion equation
912,827.20 : 1,369,240.80 = 415,163.20 : x - Step 2: Convert to fraction form
912,827.20/1,369,240.80 = 415,163.20/x - Step 3: Cross multiply
912,827.20x = 1,369,240.80 × 415,163.20 - Step 4: Simplify right side
912,827.20x = 568,458,392,098.56 - Step 5: Solve for x
x = 568,458,392,098.56/912,827.20 - Step 6: Final answer
x = 622,744.80
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1.5x scale
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.