Finding the Fourth Proportional to 5,358,603,921.38, 7,394,879,542.18 and 2,979,690,782.56
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Solution
The fourth proportional to 5,358,603,921.38, 7,394,879,542.18 and 2,979,690,782.56 is: 4,111,976,688.94
Step by Step Solution
- Step 1: Write the proportion equation
5,358,603,921.38 : 7,394,879,542.18 = 2,979,690,782.56 : x - Step 2: Convert to fraction form
5,358,603,921.38/7,394,879,542.18 = 2,979,690,782.56/x - Step 3: Cross multiply
5,358,603,921.38x = 7,394,879,542.18 × 2,979,690,782.56 - Step 4: Simplify right side
5,358,603,921.38x = 22,034,454,409,975,259,136 - Step 5: Solve for x
x = 22,034,454,409,975,259,136/5,358,603,921.38 - Step 6: Final answer
x = 4,111,976,688.94
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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.