Finding the Fourth Proportional to 646,759.35, 969,403.36 and 393,481.55
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Solution
The fourth proportional to 646,759.35, 969,403.36 and 393,481.55 is: 589,774.75
Step by Step Solution
- Step 1: Write the proportion equation
646,759.35 : 969,403.36 = 393,481.55 : x - Step 2: Convert to fraction form
646,759.35/969,403.36 = 393,481.55/x - Step 3: Cross multiply
646,759.35x = 969,403.36 × 393,481.55 - Step 4: Simplify right side
646,759.35x = 381,442,331,732.70 - Step 5: Solve for x
x = 381,442,331,732.70/646,759.35 - Step 6: Final answer
x = 589,774.75
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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.