Finding the Fourth Proportional to 636,376.72, 878,203.18 and 349,915.26
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Solution
The fourth proportional to 636,376.72, 878,203.18 and 349,915.26 is: 482,884.88
Step by Step Solution
- Step 1: Write the proportion equation
636,376.72 : 878,203.18 = 349,915.26 : x - Step 2: Convert to fraction form
636,376.72/878,203.18 = 349,915.26/x - Step 3: Cross multiply
636,376.72x = 878,203.18 × 349,915.26 - Step 4: Simplify right side
636,376.72x = 307,296,694,062.53 - Step 5: Solve for x
x = 307,296,694,062.53/636,376.72 - Step 6: Final answer
x = 482,884.88
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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.