Finding the Fourth Proportional to 489,169.70, 685,770.70 and 489,169.70
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Solution
The fourth proportional to 489,169.70, 685,770.70 and 489,169.70 is: 685,770.70
Step by Step Solution
- Step 1: Write the proportion equation
489,169.70 : 685,770.70 = 489,169.70 : x - Step 2: Convert to fraction form
489,169.70/685,770.70 = 489,169.70/x - Step 3: Cross multiply
489,169.70x = 685,770.70 × 489,169.70 - Step 4: Simplify right side
489,169.70x = 335,458,247,587.79 - Step 5: Solve for x
x = 335,458,247,587.79/489,169.70 - Step 6: Final answer
x = 685,770.70
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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.