Finding the Fourth Proportional to 4,287,399.20, 6,431,133.36 and 1,556,876.96
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Solution
The fourth proportional to 4,287,399.20, 6,431,133.36 and 1,556,876.96 is: 2,335,327.99
Step by Step Solution
- Step 1: Write the proportion equation
4,287,399.20 : 6,431,133.36 = 1,556,876.96 : x - Step 2: Convert to fraction form
4,287,399.20/6,431,133.36 = 1,556,876.96/x - Step 3: Cross multiply
4,287,399.20x = 6,431,133.36 × 1,556,876.96 - Step 4: Simplify right side
4,287,399.20x = 10,012,483,354,871.39 - Step 5: Solve for x
x = 10,012,483,354,871.39/4,287,399.20 - Step 6: Final answer
x = 2,335,327.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.