Finding the Fourth Proportional to 489,161.40, 733,742.10 and 445,615.80
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Solution
The fourth proportional to 489,161.40, 733,742.10 and 445,615.80 is: 668,423.70
Step by Step Solution
- Step 1: Write the proportion equation
489,161.40 : 733,742.10 = 445,615.80 : x - Step 2: Convert to fraction form
489,161.40/733,742.10 = 445,615.80/x - Step 3: Cross multiply
489,161.40x = 733,742.10 × 445,615.80 - Step 4: Simplify right side
489,161.40x = 326,967,072,885.18 - Step 5: Solve for x
x = 326,967,072,885.18/489,161.40 - Step 6: Final answer
x = 668,423.70
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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.