Finding the Fourth Proportional to 642,052,367.20, 886,086,912 and 363,643,418.08
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Solution
The fourth proportional to 642,052,367.20, 886,086,912 and 363,643,418.08 is: 501,858,866.75
Step by Step Solution
- Step 1: Write the proportion equation
642,052,367.20 : 886,086,912 = 363,643,418.08 : x - Step 2: Convert to fraction form
642,052,367.20/886,086,912 = 363,643,418.08/x - Step 3: Cross multiply
642,052,367.20x = 886,086,912 × 363,643,418.08 - Step 4: Simplify right side
642,052,367.20x = 322,219,673,395,632,128 - Step 5: Solve for x
x = 322,219,673,395,632,128/642,052,367.20 - Step 6: Final answer
x = 501,858,866.75
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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.