Finding the Fourth Proportional to 1,489,228,926.13, 2,055,110,845.12 and 820,236,269.53
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Solution
The fourth proportional to 1,489,228,926.13, 2,055,110,845.12 and 820,236,269.53 is: 1,131,912,242.30
Step by Step Solution
- Step 1: Write the proportion equation
1,489,228,926.13 : 2,055,110,845.12 = 820,236,269.53 : x - Step 2: Convert to fraction form
1,489,228,926.13/2,055,110,845.12 = 820,236,269.53/x - Step 3: Cross multiply
1,489,228,926.13x = 2,055,110,845.12 × 820,236,269.53 - Step 4: Simplify right side
1,489,228,926.13x = 1,685,676,453,071,874,304 - Step 5: Solve for x
x = 1,685,676,453,071,874,304/1,489,228,926.13 - Step 6: Final answer
x = 1,131,912,242.30
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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.