Finding the Fourth Proportional to 644,805.40, 966,747.30 and 289,528.60
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Solution
The fourth proportional to 644,805.40, 966,747.30 and 289,528.60 is: 434,085.99
Step by Step Solution
- Step 1: Write the proportion equation
644,805.40 : 966,747.30 = 289,528.60 : x - Step 2: Convert to fraction form
644,805.40/966,747.30 = 289,528.60/x - Step 3: Cross multiply
644,805.40x = 966,747.30 × 289,528.60 - Step 4: Simplify right side
644,805.40x = 279,900,992,322.78 - Step 5: Solve for x
x = 279,900,992,322.78/644,805.40 - Step 6: Final answer
x = 434,085.99
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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.