Finding the Fourth Proportional to 416,109.20, 624,163.80 and 389,865.20
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Solution
The fourth proportional to 416,109.20, 624,163.80 and 389,865.20 is: 584,797.80
Step by Step Solution
- Step 1: Write the proportion equation
416,109.20 : 624,163.80 = 389,865.20 : x - Step 2: Convert to fraction form
416,109.20/624,163.80 = 389,865.20/x - Step 3: Cross multiply
416,109.20x = 624,163.80 × 389,865.20 - Step 4: Simplify right side
416,109.20x = 243,339,744,719.76 - Step 5: Solve for x
x = 243,339,744,719.76/416,109.20 - Step 6: Final answer
x = 584,797.80
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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.