Finding the Fourth Proportional to 656,257.75, 905,636.31 and 354,451.75
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Solution
The fourth proportional to 656,257.75, 905,636.31 and 354,451.75 is: 489,143.75
Step by Step Solution
- Step 1: Write the proportion equation
656,257.75 : 905,636.31 = 354,451.75 : x - Step 2: Convert to fraction form
656,257.75/905,636.31 = 354,451.75/x - Step 3: Cross multiply
656,257.75x = 905,636.31 × 354,451.75 - Step 4: Simplify right side
656,257.75x = 321,004,374,943.04 - Step 5: Solve for x
x = 321,004,374,943.04/656,257.75 - Step 6: Final answer
x = 489,143.75
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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.