Finding the Fourth Proportional to 3,987,638,831.80, 5,981,458,247.70 and 2,681,569,430.20
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Solution
The fourth proportional to 3,987,638,831.80, 5,981,458,247.70 and 2,681,569,430.20 is: 4,022,354,145.30
Step by Step Solution
- Step 1: Write the proportion equation
3,987,638,831.80 : 5,981,458,247.70 = 2,681,569,430.20 : x - Step 2: Convert to fraction form
3,987,638,831.80/5,981,458,247.70 = 2,681,569,430.20/x - Step 3: Cross multiply
3,987,638,831.80x = 5,981,458,247.70 × 2,681,569,430.20 - Step 4: Simplify right side
3,987,638,831.80x = 16,039,695,585,049,976,832 - Step 5: Solve for x
x = 16,039,695,585,049,976,832/3,987,638,831.80 - Step 6: Final answer
x = 4,022,354,145.30
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.