Finding the Fourth Proportional to 1,394,879,721.84, 1,924,934,121.37 and 768,348,149.79
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Solution
The fourth proportional to 1,394,879,721.84, 1,924,934,121.37 and 768,348,149.79 is: 1,060,320,504.67
Step by Step Solution
- Step 1: Write the proportion equation
1,394,879,721.84 : 1,924,934,121.37 = 768,348,149.79 : x - Step 2: Convert to fraction form
1,394,879,721.84/1,924,934,121.37 = 768,348,149.79/x - Step 3: Cross multiply
1,394,879,721.84x = 1,924,934,121.37 × 768,348,149.79 - Step 4: Simplify right side
1,394,879,721.84x = 1,479,019,570,622,278,656 - Step 5: Solve for x
x = 1,479,019,570,622,278,656/1,394,879,721.84 - Step 6: Final answer
x = 1,060,320,504.67
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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.