Finding the Fourth Proportional to 489,108.20, 683,351.80 and 489,108.20
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Solution
The fourth proportional to 489,108.20, 683,351.80 and 489,108.20 is: 683,351.80
Step by Step Solution
- Step 1: Write the proportion equation
489,108.20 : 683,351.80 = 489,108.20 : x - Step 2: Convert to fraction form
489,108.20/683,351.80 = 489,108.20/x - Step 3: Cross multiply
489,108.20x = 683,351.80 × 489,108.20 - Step 4: Simplify right side
489,108.20x = 334,232,968,864.76 - Step 5: Solve for x
x = 334,232,968,864.76/489,108.20 - Step 6: Final answer
x = 683,351.80
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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.