Finding the Fourth Proportional to 6,318,910.24, 8,720,138.64 and 3,871,525.92
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Solution
The fourth proportional to 6,318,910.24, 8,720,138.64 and 3,871,525.92 is: 5,342,731.81
Step by Step Solution
- Step 1: Write the proportion equation
6,318,910.24 : 8,720,138.64 = 3,871,525.92 : x - Step 2: Convert to fraction form
6,318,910.24/8,720,138.64 = 3,871,525.92/x - Step 3: Cross multiply
6,318,910.24x = 8,720,138.64 × 3,871,525.92 - Step 4: Simplify right side
6,318,910.24x = 33,760,242,770,753.55 - Step 5: Solve for x
x = 33,760,242,770,753.55/6,318,910.24 - Step 6: Final answer
x = 5,342,731.81
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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.