Finding the Fourth Proportional to 3,121,112,698.74, 4,302,968,863.18 and 2,479,497,520.91
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Solution
The fourth proportional to 3,121,112,698.74, 4,302,968,863.18 and 2,479,497,520.91 is: 3,418,396,469.02
Step by Step Solution
- Step 1: Write the proportion equation
3,121,112,698.74 : 4,302,968,863.18 = 2,479,497,520.91 : x - Step 2: Convert to fraction form
3,121,112,698.74/4,302,968,863.18 = 2,479,497,520.91/x - Step 3: Cross multiply
3,121,112,698.74x = 4,302,968,863.18 × 2,479,497,520.91 - Step 4: Simplify right side
3,121,112,698.74x = 10,669,200,628,798,119,936 - Step 5: Solve for x
x = 10,669,200,628,798,119,936/3,121,112,698.74 - Step 6: Final answer
x = 3,418,396,469.02
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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.