Finding the Fourth Proportional to 1,121,997,817.17, 1,548,327,286.49 and 626,964,593.49
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Solution
The fourth proportional to 1,121,997,817.17, 1,548,327,286.49 and 626,964,593.49 is: 865,194,542.19
Step by Step Solution
- Step 1: Write the proportion equation
1,121,997,817.17 : 1,548,327,286.49 = 626,964,593.49 : x - Step 2: Convert to fraction form
1,121,997,817.17/1,548,327,286.49 = 626,964,593.49/x - Step 3: Cross multiply
1,121,997,817.17x = 1,548,327,286.49 × 626,964,593.49 - Step 4: Simplify right side
1,121,997,817.17x = 970,746,387,760,542,720 - Step 5: Solve for x
x = 970,746,387,760,542,720/1,121,997,817.17 - Step 6: Final answer
x = 865,194,542.19
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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.