Finding the Fourth Proportional to 3,946,786.13, 5,921,115.20 and 1,287,394.13
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Solution
The fourth proportional to 3,946,786.13, 5,921,115.20 and 1,287,394.13 is: 1,931,396.50
Step by Step Solution
- Step 1: Write the proportion equation
3,946,786.13 : 5,921,115.20 = 1,287,394.13 : x - Step 2: Convert to fraction form
3,946,786.13/5,921,115.20 = 1,287,394.13/x - Step 3: Cross multiply
3,946,786.13x = 5,921,115.20 × 1,287,394.13 - Step 4: Simplify right side
3,946,786.13x = 7,622,808,915,491.23 - Step 5: Solve for x
x = 7,622,808,915,491.23/3,946,786.13 - Step 6: Final answer
x = 1,931,396.50
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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.