Finding the Fourth Proportional to 489,949.76, 676,113.14 and 275,098.88
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Solution
The fourth proportional to 489,949.76, 676,113.14 and 275,098.88 is: 379,626.62
Step by Step Solution
- Step 1: Write the proportion equation
489,949.76 : 676,113.14 = 275,098.88 : x - Step 2: Convert to fraction form
489,949.76/676,113.14 = 275,098.88/x - Step 3: Cross multiply
489,949.76x = 676,113.14 × 275,098.88 - Step 4: Simplify right side
489,949.76x = 185,997,969,945.31 - Step 5: Solve for x
x = 185,997,969,945.31/489,949.76 - Step 6: Final answer
x = 379,626.62
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1.5x scale
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.