Finding the Fourth Proportional to 512,467.70, 768,701.55 and 489,139.70
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Solution
The fourth proportional to 512,467.70, 768,701.55 and 489,139.70 is: 733,709.55
Step by Step Solution
- Step 1: Write the proportion equation
512,467.70 : 768,701.55 = 489,139.70 : x - Step 2: Convert to fraction form
512,467.70/768,701.55 = 489,139.70/x - Step 3: Cross multiply
512,467.70x = 768,701.55 × 489,139.70 - Step 4: Simplify right side
512,467.70x = 376,002,445,556.54 - Step 5: Solve for x
x = 376,002,445,556.54/512,467.70 - Step 6: Final answer
x = 733,709.55
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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.