Finding the Fourth Proportional to 4,912,915.33, 7,370,740.12 and 2,143,425.49
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Solution
The fourth proportional to 4,912,915.33, 7,370,740.12 and 2,143,425.49 is: 3,215,734.70
Step by Step Solution
- Step 1: Write the proportion equation
4,912,915.33 : 7,370,740.12 = 2,143,425.49 : x - Step 2: Convert to fraction form
4,912,915.33/7,370,740.12 = 2,143,425.49/x - Step 3: Cross multiply
4,912,915.33x = 7,370,740.12 × 2,143,425.49 - Step 4: Simplify right side
4,912,915.33x = 15,798,632,277,159.07 - Step 5: Solve for x
x = 15,798,632,277,159.07/4,912,915.33 - Step 6: Final answer
x = 3,215,734.70
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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.