Finding the Fourth Proportional to 1,286,188.54, 1,929,284.18 and 326,716.10
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Solution
The fourth proportional to 1,286,188.54, 1,929,284.18 and 326,716.10 is: 490,074.50
Step by Step Solution
- Step 1: Write the proportion equation
1,286,188.54 : 1,929,284.18 = 326,716.10 : x - Step 2: Convert to fraction form
1,286,188.54/1,929,284.18 = 326,716.10/x - Step 3: Cross multiply
1,286,188.54x = 1,929,284.18 × 326,716.10 - Step 4: Simplify right side
1,286,188.54x = 630,328,203,526.88 - Step 5: Solve for x
x = 630,328,203,526.88/1,286,188.54 - Step 6: Final answer
x = 490,074.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.