Finding the Fourth Proportional to 415,313,139.20, 622,969,708.80 and 415,313,139.20
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Solution
The fourth proportional to 415,313,139.20, 622,969,708.80 and 415,313,139.20 is: 622,969,708.80
Step by Step Solution
- Step 1: Write the proportion equation
415,313,139.20 : 622,969,708.80 = 415,313,139.20 : x - Step 2: Convert to fraction form
415,313,139.20/622,969,708.80 = 415,313,139.20/x - Step 3: Cross multiply
415,313,139.20x = 622,969,708.80 × 415,313,139.20 - Step 4: Simplify right side
415,313,139.20x = 258,727,505,388,237,824 - Step 5: Solve for x
x = 258,727,505,388,237,824/415,313,139.20 - Step 6: Final answer
x = 622,969,708.80
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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.