Finding the Fourth Proportional to 628,721.92, 867,657.18 and 353,128.26
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Solution
The fourth proportional to 628,721.92, 867,657.18 and 353,128.26 is: 487,328.75
Step by Step Solution
- Step 1: Write the proportion equation
628,721.92 : 867,657.18 = 353,128.26 : x - Step 2: Convert to fraction form
628,721.92/867,657.18 = 353,128.26/x - Step 3: Cross multiply
628,721.92x = 867,657.18 × 353,128.26 - Step 4: Simplify right side
628,721.92x = 306,394,264,145.98 - Step 5: Solve for x
x = 306,394,264,145.98/628,721.92 - Step 6: Final answer
x = 487,328.75
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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.