Finding the Fourth Proportional to 415,281,202.40, 622,921,803.60 and 347,760,639.20
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Solution
The fourth proportional to 415,281,202.40, 622,921,803.60 and 347,760,639.20 is: 521,640,958.80
Step by Step Solution
- Step 1: Write the proportion equation
415,281,202.40 : 622,921,803.60 = 347,760,639.20 : x - Step 2: Convert to fraction form
415,281,202.40/622,921,803.60 = 347,760,639.20/x - Step 3: Cross multiply
415,281,202.40x = 622,921,803.60 × 347,760,639.20 - Step 4: Simplify right side
415,281,202.40x = 216,627,684,591,552,864 - Step 5: Solve for x
x = 216,627,684,591,552,864/415,281,202.40 - Step 6: Final answer
x = 521,640,958.80
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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.