Finding the Fourth Proportional to 489,829.28, 675,964.08 and 274,969.76
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Solution
The fourth proportional to 489,829.28, 675,964.08 and 274,969.76 is: 379,458.09
Step by Step Solution
- Step 1: Write the proportion equation
489,829.28 : 675,964.08 = 274,969.76 : x - Step 2: Convert to fraction form
489,829.28/675,964.08 = 274,969.76/x - Step 3: Cross multiply
489,829.28x = 675,964.08 × 274,969.76 - Step 4: Simplify right side
489,829.28x = 185,869,680,846.22 - Step 5: Solve for x
x = 185,869,680,846.22/489,829.28 - Step 6: Final answer
x = 379,458.09
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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.