Finding the Fourth Proportional to 7,811,121.21, 11,708,414.82 and 3,554,278.80
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Solution
The fourth proportional to 7,811,121.21, 11,708,414.82 and 3,554,278.80 is: 5,327,656.49
Step by Step Solution
- Step 1: Write the proportion equation
7,811,121.21 : 11,708,414.82 = 3,554,278.80 : x - Step 2: Convert to fraction form
7,811,121.21/11,708,414.82 = 3,554,278.80/x - Step 3: Cross multiply
7,811,121.21x = 11,708,414.82 × 3,554,278.80 - Step 4: Simplify right side
7,811,121.21x = 41,614,970,576,331.81 - Step 5: Solve for x
x = 41,614,970,576,331.81/7,811,121.21 - Step 6: Final answer
x = 5,327,656.49
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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.