Finding the Fourth Proportional to 7,381,614.20, 11,072,421.30 and 3,980,391.80
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Solution
The fourth proportional to 7,381,614.20, 11,072,421.30 and 3,980,391.80 is: 5,970,587.70
Step by Step Solution
- Step 1: Write the proportion equation
7,381,614.20 : 11,072,421.30 = 3,980,391.80 : x - Step 2: Convert to fraction form
7,381,614.20/11,072,421.30 = 3,980,391.80/x - Step 3: Cross multiply
7,381,614.20x = 11,072,421.30 × 3,980,391.80 - Step 4: Simplify right side
7,381,614.20x = 44,072,574,948,665.34 - Step 5: Solve for x
x = 44,072,574,948,665.34/7,381,614.20 - Step 6: Final answer
x = 5,970,587.70
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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.