Finding the Fourth Proportional to 636,638.20, 878,266.18 and 381,546.52
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Solution
The fourth proportional to 636,638.20, 878,266.18 and 381,546.52 is: 526,357.68
Step by Step Solution
- Step 1: Write the proportion equation
636,638.20 : 878,266.18 = 381,546.52 : x - Step 2: Convert to fraction form
636,638.20/878,266.18 = 381,546.52/x - Step 3: Cross multiply
636,638.20x = 878,266.18 × 381,546.52 - Step 4: Simplify right side
636,638.20x = 335,099,404,612.69 - Step 5: Solve for x
x = 335,099,404,612.69/636,638.20 - Step 6: Final answer
x = 526,357.68
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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.