Finding the Fourth Proportional to 628,608.99, 867,480.39 and 342,131.13
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Solution
The fourth proportional to 628,608.99, 867,480.39 and 342,131.13 is: 472,140.95
Step by Step Solution
- Step 1: Write the proportion equation
628,608.99 : 867,480.39 = 342,131.13 : x - Step 2: Convert to fraction form
628,608.99/867,480.39 = 342,131.13/x - Step 3: Cross multiply
628,608.99x = 867,480.39 × 342,131.13 - Step 4: Simplify right side
628,608.99x = 296,792,046,083.54 - Step 5: Solve for x
x = 296,792,046,083.54/628,608.99 - Step 6: Final answer
x = 472,140.95
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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.