Finding the Fourth Proportional to 7,080,815,421.38, 9,771,269,115.33 and 3,908,931,230.42
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Solution
The fourth proportional to 7,080,815,421.38, 9,771,269,115.33 and 3,908,931,230.42 is: 5,394,183,682.63
Step by Step Solution
- Step 1: Write the proportion equation
7,080,815,421.38 : 9,771,269,115.33 = 3,908,931,230.42 : x - Step 2: Convert to fraction form
7,080,815,421.38/9,771,269,115.33 = 3,908,931,230.42/x - Step 3: Cross multiply
7,080,815,421.38x = 9,771,269,115.33 × 3,908,931,230.42 - Step 4: Simplify right side
7,080,815,421.38x = 38,195,219,005,751,844,864 - Step 5: Solve for x
x = 38,195,219,005,751,844,864/7,080,815,421.38 - Step 6: Final answer
x = 5,394,183,682.63
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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.