Finding the Fourth Proportional to 1,605,446,721.80, 2,408,170,082.70 and 515,040,014.60
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Solution
The fourth proportional to 1,605,446,721.80, 2,408,170,082.70 and 515,040,014.60 is: 772,560,021.90
Step by Step Solution
- Step 1: Write the proportion equation
1,605,446,721.80 : 2,408,170,082.70 = 515,040,014.60 : x - Step 2: Convert to fraction form
1,605,446,721.80/2,408,170,082.70 = 515,040,014.60/x - Step 3: Cross multiply
1,605,446,721.80x = 2,408,170,082.70 × 515,040,014.60 - Step 4: Simplify right side
1,605,446,721.80x = 1,240,303,954,553,091,072 - Step 5: Solve for x
x = 1,240,303,954,553,091,072/1,605,446,721.80 - Step 6: Final answer
x = 772,560,021.90
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.