Finding the Fourth Proportional to 639,821.94, 882,954.84 and 353,343.18
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Solution
The fourth proportional to 639,821.94, 882,954.84 and 353,343.18 is: 487,613.90
Step by Step Solution
- Step 1: Write the proportion equation
639,821.94 : 882,954.84 = 353,343.18 : x - Step 2: Convert to fraction form
639,821.94/882,954.84 = 353,343.18/x - Step 3: Cross multiply
639,821.94x = 882,954.84 × 353,343.18 - Step 4: Simplify right side
639,821.94x = 311,986,070,961.99 - Step 5: Solve for x
x = 311,986,070,961.99/639,821.94 - Step 6: Final answer
x = 487,613.90
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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.