Finding the Fourth Proportional to 636,623.20, 878,245.50 and 381,531.52
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Solution
The fourth proportional to 636,623.20, 878,245.50 and 381,531.52 is: 526,336.99
Step by Step Solution
- Step 1: Write the proportion equation
636,623.20 : 878,245.50 = 381,531.52 : x - Step 2: Convert to fraction form
636,623.20/878,245.50 = 381,531.52/x - Step 3: Cross multiply
636,623.20x = 878,245.50 × 381,531.52 - Step 4: Simplify right side
636,623.20x = 335,078,340,548.16 - Step 5: Solve for x
x = 335,078,340,548.16/636,623.20 - Step 6: Final answer
x = 526,336.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.