Finding the Fourth Proportional to 665,728,251.20, 998,194,245.60 and 343,241,979.20
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Solution
The fourth proportional to 665,728,251.20, 998,194,245.60 and 343,241,979.20 is: 514,657,696.84
Step by Step Solution
- Step 1: Write the proportion equation
665,728,251.20 : 998,194,245.60 = 343,241,979.20 : x - Step 2: Convert to fraction form
665,728,251.20/998,194,245.60 = 343,241,979.20/x - Step 3: Cross multiply
665,728,251.20x = 998,194,245.60 × 343,241,979.20 - Step 4: Simplify right side
665,728,251.20x = 342,622,168,485,794,880 - Step 5: Solve for x
x = 342,622,168,485,794,880/665,728,251.20 - Step 6: Final answer
x = 514,657,696.84
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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.