Finding the Fourth Proportional to 5,358,603,919.38, 7,394,879,539.43 and 2,979,690,780.57
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Solution
The fourth proportional to 5,358,603,919.38, 7,394,879,539.43 and 2,979,690,780.57 is: 4,111,976,686.19
Step by Step Solution
- Step 1: Write the proportion equation
5,358,603,919.38 : 7,394,879,539.43 = 2,979,690,780.57 : x - Step 2: Convert to fraction form
5,358,603,919.38/7,394,879,539.43 = 2,979,690,780.57/x - Step 3: Cross multiply
5,358,603,919.38x = 7,394,879,539.43 × 2,979,690,780.57 - Step 4: Simplify right side
5,358,603,919.38x = 22,034,454,387,031,916,544 - Step 5: Solve for x
x = 22,034,454,387,031,916,544/5,358,603,919.38 - Step 6: Final answer
x = 4,111,976,686.19
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1.5x scale
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.