Finding the Fourth Proportional to 1,149,623,236.82, 1,586,480,761.85 and 620,987,456.44
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Solution
The fourth proportional to 1,149,623,236.82, 1,586,480,761.85 and 620,987,456.44 is: 856,963,065.32
Step by Step Solution
- Step 1: Write the proportion equation
1,149,623,236.82 : 1,586,480,761.85 = 620,987,456.44 : x - Step 2: Convert to fraction form
1,149,623,236.82/1,586,480,761.85 = 620,987,456.44/x - Step 3: Cross multiply
1,149,623,236.82x = 1,586,480,761.85 × 620,987,456.44 - Step 4: Simplify right side
1,149,623,236.82x = 985,184,652,991,102,976 - Step 5: Solve for x
x = 985,184,652,991,102,976/1,149,623,236.82 - Step 6: Final answer
x = 856,963,065.32
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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.