Finding the Fourth Proportional to 489,128.40, 733,692.60 and 445,825.80
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Solution
The fourth proportional to 489,128.40, 733,692.60 and 445,825.80 is: 668,738.70
Step by Step Solution
- Step 1: Write the proportion equation
489,128.40 : 733,692.60 = 445,825.80 : x - Step 2: Convert to fraction form
489,128.40/733,692.60 = 445,825.80/x - Step 3: Cross multiply
489,128.40x = 733,692.60 × 445,825.80 - Step 4: Simplify right side
489,128.40x = 327,099,090,349.08 - Step 5: Solve for x
x = 327,099,090,349.08/489,128.40 - Step 6: Final answer
x = 668,738.70
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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.