Finding the Fourth Proportional to 643,644.60, 965,780.49 and 264,679.19
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Solution
The fourth proportional to 643,644.60, 965,780.49 and 264,679.19 is: 397,147.74
Step by Step Solution
- Step 1: Write the proportion equation
643,644.60 : 965,780.49 = 264,679.19 : x - Step 2: Convert to fraction form
643,644.60/965,780.49 = 264,679.19/x - Step 3: Cross multiply
643,644.60x = 965,780.49 × 264,679.19 - Step 4: Simplify right side
643,644.60x = 255,622,002,284.43 - Step 5: Solve for x
x = 255,622,002,284.43/643,644.60 - Step 6: Final answer
x = 397,147.74
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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.