Finding the Fourth Proportional to 7,438,748.56, 11,162,427.74 and 3,120,412.05
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Solution
The fourth proportional to 7,438,748.56, 11,162,427.74 and 3,120,412.05 is: 4,682,423.89
Step by Step Solution
- Step 1: Write the proportion equation
7,438,748.56 : 11,162,427.74 = 3,120,412.05 : x - Step 2: Convert to fraction form
7,438,748.56/11,162,427.74 = 3,120,412.05/x - Step 3: Cross multiply
7,438,748.56x = 11,162,427.74 × 3,120,412.05 - Step 4: Simplify right side
7,438,748.56x = 34,831,373,971,338.13 - Step 5: Solve for x
x = 34,831,373,971,338.13/7,438,748.56 - Step 6: Final answer
x = 4,682,423.89
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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.