Finding the Fourth Proportional to 489,114.70, 683,360.90 and 489,114.70
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Solution
The fourth proportional to 489,114.70, 683,360.90 and 489,114.70 is: 683,360.90
Step by Step Solution
- Step 1: Write the proportion equation
489,114.70 : 683,360.90 = 489,114.70 : x - Step 2: Convert to fraction form
489,114.70/683,360.90 = 489,114.70/x - Step 3: Cross multiply
489,114.70x = 683,360.90 × 489,114.70 - Step 4: Simplify right side
489,114.70x = 334,241,861,595.23 - Step 5: Solve for x
x = 334,241,861,595.23/489,114.70 - Step 6: Final answer
x = 683,360.90
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.