Finding the Fourth Proportional to 1,259,716,408.20, 1,889,574,612.30 and 865,174,609.80
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Solution
The fourth proportional to 1,259,716,408.20, 1,889,574,612.30 and 865,174,609.80 is: 1,297,761,914.70
Step by Step Solution
- Step 1: Write the proportion equation
1,259,716,408.20 : 1,889,574,612.30 = 865,174,609.80 : x - Step 2: Convert to fraction form
1,259,716,408.20/1,889,574,612.30 = 865,174,609.80/x - Step 3: Cross multiply
1,259,716,408.20x = 1,889,574,612.30 × 865,174,609.80 - Step 4: Simplify right side
1,259,716,408.20x = 1,634,811,977,884,638,720 - Step 5: Solve for x
x = 1,634,811,977,884,638,720/1,259,716,408.20 - Step 6: Final answer
x = 1,297,761,914.70
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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.