Finding the Fourth Proportional to 425,087.10, 638,149.05 and 421,976.70
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Solution
The fourth proportional to 425,087.10, 638,149.05 and 421,976.70 is: 633,479.66
Step by Step Solution
- Step 1: Write the proportion equation
425,087.10 : 638,149.05 = 421,976.70 : x - Step 2: Convert to fraction form
425,087.10/638,149.05 = 421,976.70/x - Step 3: Cross multiply
425,087.10x = 638,149.05 × 421,976.70 - Step 4: Simplify right side
425,087.10x = 269,284,030,227.14 - Step 5: Solve for x
x = 269,284,030,227.14/425,087.10 - Step 6: Final answer
x = 633,479.66
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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.