Finding the Fourth Proportional to 7,768,311.48, 10,720,908.10 and 4,284,331.68
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Solution
The fourth proportional to 7,768,311.48, 10,720,908.10 and 4,284,331.68 is: 5,912,729.73
Step by Step Solution
- Step 1: Write the proportion equation
7,768,311.48 : 10,720,908.10 = 4,284,331.68 : x - Step 2: Convert to fraction form
7,768,311.48/10,720,908.10 = 4,284,331.68/x - Step 3: Cross multiply
7,768,311.48x = 10,720,908.10 × 4,284,331.68 - Step 4: Simplify right side
7,768,311.48x = 45,931,926,211,198.60 - Step 5: Solve for x
x = 45,931,926,211,198.60/7,768,311.48 - Step 6: Final answer
x = 5,912,729.73
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.