Finding the Fourth Proportional to 2,120,430.69, 3,180,631.19 and 858,240.09
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Solution
The fourth proportional to 2,120,430.69, 3,180,631.19 and 858,240.09 is: 1,287,354.12
Step by Step Solution
- Step 1: Write the proportion equation
2,120,430.69 : 3,180,631.19 = 858,240.09 : x - Step 2: Convert to fraction form
2,120,430.69/3,180,631.19 = 858,240.09/x - Step 3: Cross multiply
2,120,430.69x = 3,180,631.19 × 858,240.09 - Step 4: Simplify right side
2,120,430.69x = 2,729,745,194,471.21 - Step 5: Solve for x
x = 2,729,745,194,471.21/2,120,430.69 - Step 6: Final answer
x = 1,287,354.12
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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.