Finding the Fourth Proportional to 448,618,163.40, 628,972,421.40 and 448,618,163.40
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Solution
The fourth proportional to 448,618,163.40, 628,972,421.40 and 448,618,163.40 is: 628,972,421.40
Step by Step Solution
- Step 1: Write the proportion equation
448,618,163.40 : 628,972,421.40 = 448,618,163.40 : x - Step 2: Convert to fraction form
448,618,163.40/628,972,421.40 = 448,618,163.40/x - Step 3: Cross multiply
448,618,163.40x = 628,972,421.40 × 448,618,163.40 - Step 4: Simplify right side
448,618,163.40x = 282,168,452,517,718,816 - Step 5: Solve for x
x = 282,168,452,517,718,816/448,618,163.40 - Step 6: Final answer
x = 628,972,421.40
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.