Finding the Fourth Proportional to 489,771.66, 676,138.55 and 380,632.26
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Solution
The fourth proportional to 489,771.66, 676,138.55 and 380,632.26 is: 525,469.65
Step by Step Solution
- Step 1: Write the proportion equation
489,771.66 : 676,138.55 = 380,632.26 : x - Step 2: Convert to fraction form
489,771.66/676,138.55 = 380,632.26/x - Step 3: Cross multiply
489,771.66x = 676,138.55 × 380,632.26 - Step 4: Simplify right side
489,771.66x = 257,360,142,456.46 - Step 5: Solve for x
x = 257,360,142,456.46/489,771.66 - Step 6: Final answer
x = 525,469.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.