Finding the Third Proportional to 489,378.38 and 689,161.50
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Solution
The third proportional to 489,378.38 and 689,161.50 is: 970,503.80
Step by Step Solution
- Step 1: Write the proportion equation
489,378.38 : 689,161.50 = 689,161.50 : x - Step 2: Convert to fraction form
489,378.38/689,161.50 = 689,161.50/x - Step 3: Cross multiply
489,378.38x = 689,161.50 × 689,161.50 - Step 4: Simplify right side
489,378.38x = 474,943,573,082.25 - Step 5: Solve for x
x = 474,943,573,082.25/489,378.38 - Step 6: Final answer
x = 970,503.80
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These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.