Finding the Fourth Proportional to 455,163.20, 681,432.60 and 455,163.20
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Solution
The fourth proportional to 455,163.20, 681,432.60 and 455,163.20 is: 681,432.60
Step by Step Solution
- Step 1: Write the proportion equation
455,163.20 : 681,432.60 = 455,163.20 : x - Step 2: Convert to fraction form
455,163.20/681,432.60 = 455,163.20/x - Step 3: Cross multiply
455,163.20x = 681,432.60 × 455,163.20 - Step 4: Simplify right side
455,163.20x = 310,163,042,800.32 - Step 5: Solve for x
x = 310,163,042,800.32/455,163.20 - Step 6: Final answer
x = 681,432.60
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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.