Finding the Fourth Proportional to 5,163,563.94, 7,125,678.89 and 2,840,406.56
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Solution
The fourth proportional to 5,163,563.94, 7,125,678.89 and 2,840,406.56 is: 3,919,739.40
Step by Step Solution
- Step 1: Write the proportion equation
5,163,563.94 : 7,125,678.89 = 2,840,406.56 : x - Step 2: Convert to fraction form
5,163,563.94/7,125,678.89 = 2,840,406.56/x - Step 3: Cross multiply
5,163,563.94x = 7,125,678.89 × 2,840,406.56 - Step 4: Simplify right side
5,163,563.94x = 20,239,825,013,779.09 - Step 5: Solve for x
x = 20,239,825,013,779.09/5,163,563.94 - Step 6: Final answer
x = 3,919,739.40
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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.