Finding the Fourth Proportional to 8,128,633.42, 11,212,372.92 and 5,223,028.96
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Solution
The fourth proportional to 8,128,633.42, 11,212,372.92 and 5,223,028.96 is: 7,204,476.50
Step by Step Solution
- Step 1: Write the proportion equation
8,128,633.42 : 11,212,372.92 = 5,223,028.96 : x - Step 2: Convert to fraction form
8,128,633.42/11,212,372.92 = 5,223,028.96/x - Step 3: Cross multiply
8,128,633.42x = 11,212,372.92 × 5,223,028.96 - Step 4: Simplify right side
8,128,633.42x = 58,562,548,471,479.77 - Step 5: Solve for x
x = 58,562,548,471,479.77/8,128,633.42 - Step 6: Final answer
x = 7,204,476.50
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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.