Finding the Fourth Proportional to 1,392,080,122.13, 1,921,121,078.51 and 797,479,524.41
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Solution
The fourth proportional to 1,392,080,122.13, 1,921,121,078.51 and 797,479,524.41 is: 1,100,550,679.28
Step by Step Solution
- Step 1: Write the proportion equation
1,392,080,122.13 : 1,921,121,078.51 = 797,479,524.41 : x - Step 2: Convert to fraction form
1,392,080,122.13/1,921,121,078.51 = 797,479,524.41/x - Step 3: Cross multiply
1,392,080,122.13x = 1,921,121,078.51 × 797,479,524.41 - Step 4: Simplify right side
1,392,080,122.13x = 1,532,054,724,016,569,088 - Step 5: Solve for x
x = 1,532,054,724,016,569,088/1,392,080,122.13 - Step 6: Final answer
x = 1,100,550,679.28
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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.