Finding the Fourth Proportional to 1,618,198,739.66, 2,233,118,142.52 and 875,650,770.38
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Solution
The fourth proportional to 1,618,198,739.66, 2,233,118,142.52 and 875,650,770.38 is: 1,208,400,163.66
Step by Step Solution
- Step 1: Write the proportion equation
1,618,198,739.66 : 2,233,118,142.52 = 875,650,770.38 : x - Step 2: Convert to fraction form
1,618,198,739.66/2,233,118,142.52 = 875,650,770.38/x - Step 3: Cross multiply
1,618,198,739.66x = 2,233,118,142.52 × 875,650,770.38 - Step 4: Simplify right side
1,618,198,739.66x = 1,955,431,621,847,192,576 - Step 5: Solve for x
x = 1,955,431,621,847,192,576/1,618,198,739.66 - Step 6: Final answer
x = 1,208,400,163.66
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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.