Finding the Fourth Proportional to 3,426,149,782.26, 4,729,635,926.45 and 2,157,854,708.72
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Solution
The fourth proportional to 3,426,149,782.26, 4,729,635,926.45 and 2,157,854,708.72 is: 2,978,815,230.80
Step by Step Solution
- Step 1: Write the proportion equation
3,426,149,782.26 : 4,729,635,926.45 = 2,157,854,708.72 : x - Step 2: Convert to fraction form
3,426,149,782.26/4,729,635,926.45 = 2,157,854,708.72/x - Step 3: Cross multiply
3,426,149,782.26x = 4,729,635,926.45 × 2,157,854,708.72 - Step 4: Simplify right side
3,426,149,782.26x = 10,205,867,154,386,974,720 - Step 5: Solve for x
x = 10,205,867,154,386,974,720/3,426,149,782.26 - Step 6: Final answer
x = 2,978,815,230.80
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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.