Finding the Fourth Proportional to 678,717.65, 936,638.06 and 372,801.21
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Solution
The fourth proportional to 678,717.65, 936,638.06 and 372,801.21 is: 514,469.90
Step by Step Solution
- Step 1: Write the proportion equation
678,717.65 : 936,638.06 = 372,801.21 : x - Step 2: Convert to fraction form
678,717.65/936,638.06 = 372,801.21/x - Step 3: Cross multiply
678,717.65x = 936,638.06 × 372,801.21 - Step 4: Simplify right side
678,717.65x = 349,179,800,236.05 - Step 5: Solve for x
x = 349,179,800,236.05/678,717.65 - Step 6: Final answer
x = 514,469.90
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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.