Finding the Fourth Proportional to 415,277.20, 622,915.80 and 415,277.20
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Solution
The fourth proportional to 415,277.20, 622,915.80 and 415,277.20 is: 622,915.80
Step by Step Solution
- Step 1: Write the proportion equation
415,277.20 : 622,915.80 = 415,277.20 : x - Step 2: Convert to fraction form
415,277.20/622,915.80 = 415,277.20/x - Step 3: Cross multiply
415,277.20x = 622,915.80 × 415,277.20 - Step 4: Simplify right side
415,277.20x = 258,682,729,259.76 - Step 5: Solve for x
x = 258,682,729,259.76/415,277.20 - Step 6: Final answer
x = 622,915.80
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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.