Finding the Fourth Proportional to 415,079.70, 622,619.55 and 415,079.70
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Solution
The fourth proportional to 415,079.70, 622,619.55 and 415,079.70 is: 622,619.55
Step by Step Solution
- Step 1: Write the proportion equation
415,079.70 : 622,619.55 = 415,079.70 : x - Step 2: Convert to fraction form
415,079.70/622,619.55 = 415,079.70/x - Step 3: Cross multiply
415,079.70x = 622,619.55 × 415,079.70 - Step 4: Simplify right side
415,079.70x = 258,436,736,028.14 - Step 5: Solve for x
x = 258,436,736,028.14/415,079.70 - Step 6: Final answer
x = 622,619.55
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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.