Finding the Fourth Proportional to 5,178,873.11, 7,147,270.53 and 2,856,220.03
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Solution
The fourth proportional to 5,178,873.11, 7,147,270.53 and 2,856,220.03 is: 3,941,818.39
Step by Step Solution
- Step 1: Write the proportion equation
5,178,873.11 : 7,147,270.53 = 2,856,220.03 : x - Step 2: Convert to fraction form
5,178,873.11/7,147,270.53 = 2,856,220.03/x - Step 3: Cross multiply
5,178,873.11x = 7,147,270.53 × 2,856,220.03 - Step 4: Simplify right side
5,178,873.11x = 20,414,177,224,378.53 - Step 5: Solve for x
x = 20,414,177,224,378.53/5,178,873.11 - Step 6: Final answer
x = 3,941,818.39
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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.