Finding the Fourth Proportional to 1,248,649,905.40, 1,723,242,685.26 and 691,907,589.88
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Solution
The fourth proportional to 1,248,649,905.40, 1,723,242,685.26 and 691,907,589.88 is: 954,891,109.17
Step by Step Solution
- Step 1: Write the proportion equation
1,248,649,905.40 : 1,723,242,685.26 = 691,907,589.88 : x - Step 2: Convert to fraction form
1,248,649,905.40/1,723,242,685.26 = 691,907,589.88/x - Step 3: Cross multiply
1,248,649,905.40x = 1,723,242,685.26 × 691,907,589.88 - Step 4: Simplify right side
1,248,649,905.40x = 1,192,324,693,136,585,984 - Step 5: Solve for x
x = 1,192,324,693,136,585,984/1,248,649,905.40 - Step 6: Final answer
x = 954,891,109.17
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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.