Finding the Fourth Proportional to 5,430,912.44, 7,493,826.12 and 3,138,630.80
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Solution
The fourth proportional to 5,430,912.44, 7,493,826.12 and 3,138,630.80 is: 4,330,829.07
Step by Step Solution
- Step 1: Write the proportion equation
5,430,912.44 : 7,493,826.12 = 3,138,630.80 : x - Step 2: Convert to fraction form
5,430,912.44/7,493,826.12 = 3,138,630.80/x - Step 3: Cross multiply
5,430,912.44x = 7,493,826.12 × 3,138,630.80 - Step 4: Simplify right side
5,430,912.44x = 23,520,353,470,076.50 - Step 5: Solve for x
x = 23,520,353,470,076.50/5,430,912.44 - Step 6: Final answer
x = 4,330,829.07
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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.