Finding the Fourth Proportional to 1,273,233,297.20, 1,910,134,791.48 and 387,987,939.68
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Solution
The fourth proportional to 1,273,233,297.20, 1,910,134,791.48 and 387,987,939.68 is: 582,068,709.55
Step by Step Solution
- Step 1: Write the proportion equation
1,273,233,297.20 : 1,910,134,791.48 = 387,987,939.68 : x - Step 2: Convert to fraction form
1,273,233,297.20/1,910,134,791.48 = 387,987,939.68/x - Step 3: Cross multiply
1,273,233,297.20x = 1,910,134,791.48 × 387,987,939.68 - Step 4: Simplify right side
1,273,233,297.20x = 741,109,262,257,411,584 - Step 5: Solve for x
x = 741,109,262,257,411,584/1,273,233,297.20 - Step 6: Final answer
x = 582,068,709.55
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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.