Finding the Fourth Proportional to 890,961.40, 1,336,748.10 and 259,967.80
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Solution
The fourth proportional to 890,961.40, 1,336,748.10 and 259,967.80 is: 390,040.99
Step by Step Solution
- Step 1: Write the proportion equation
890,961.40 : 1,336,748.10 = 259,967.80 : x - Step 2: Convert to fraction form
890,961.40/1,336,748.10 = 259,967.80/x - Step 3: Cross multiply
890,961.40x = 1,336,748.10 × 259,967.80 - Step 4: Simplify right side
890,961.40x = 347,511,462,711.18 - Step 5: Solve for x
x = 347,511,462,711.18/890,961.40 - Step 6: Final answer
x = 390,040.99
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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.