Finding the Fourth Proportional to 1,561,555,309.44, 2,342,720,646.12 and 774,978,121.20
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Solution
The fourth proportional to 1,561,555,309.44, 2,342,720,646.12 and 774,978,121.20 is: 1,162,659,582.95
Step by Step Solution
- Step 1: Write the proportion equation
1,561,555,309.44 : 2,342,720,646.12 = 774,978,121.20 : x - Step 2: Convert to fraction form
1,561,555,309.44/2,342,720,646.12 = 774,978,121.20/x - Step 3: Cross multiply
1,561,555,309.44x = 2,342,720,646.12 × 774,978,121.20 - Step 4: Simplify right side
1,561,555,309.44x = 1,815,557,244,826,527,744 - Step 5: Solve for x
x = 1,815,557,244,826,527,744/1,561,555,309.44 - Step 6: Final answer
x = 1,162,659,582.95
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.