Finding the Fourth Proportional to 1,487,131,578.92, 2,052,230,227.26 and 818,062,217.48
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Solution
The fourth proportional to 1,487,131,578.92, 2,052,230,227.26 and 818,062,217.48 is: 1,128,919,615.65
Step by Step Solution
- Step 1: Write the proportion equation
1,487,131,578.92 : 2,052,230,227.26 = 818,062,217.48 : x - Step 2: Convert to fraction form
1,487,131,578.92/2,052,230,227.26 = 818,062,217.48/x - Step 3: Cross multiply
1,487,131,578.92x = 2,052,230,227.26 × 818,062,217.48 - Step 4: Simplify right side
1,487,131,578.92x = 1,678,852,010,491,800,064 - Step 5: Solve for x
x = 1,678,852,010,491,800,064/1,487,131,578.92 - Step 6: Final answer
x = 1,128,919,615.65
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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.