Finding the Fourth Proportional to 990,823,163.10, 1,486,234,744.65 and 664,305,812.70
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Solution
The fourth proportional to 990,823,163.10, 1,486,234,744.65 and 664,305,812.70 is: 996,458,719.05
Step by Step Solution
- Step 1: Write the proportion equation
990,823,163.10 : 1,486,234,744.65 = 664,305,812.70 : x - Step 2: Convert to fraction form
990,823,163.10/1,486,234,744.65 = 664,305,812.70/x - Step 3: Cross multiply
990,823,163.10x = 1,486,234,744.65 × 664,305,812.70 - Step 4: Simplify right side
990,823,163.10x = 987,314,379,907,695,360 - Step 5: Solve for x
x = 987,314,379,907,695,360/990,823,163.10 - Step 6: Final answer
x = 996,458,719.05
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Double scale
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Similar ratio
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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.