Finding the Fourth Proportional to 871,405.43, 1,202,652.26 and 489,432.20
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Solution
The fourth proportional to 871,405.43, 1,202,652.26 and 489,432.20 is: 675,479.77
Step by Step Solution
- Step 1: Write the proportion equation
871,405.43 : 1,202,652.26 = 489,432.20 : x - Step 2: Convert to fraction form
871,405.43/1,202,652.26 = 489,432.20/x - Step 3: Cross multiply
871,405.43x = 1,202,652.26 × 489,432.20 - Step 4: Simplify right side
871,405.43x = 588,616,741,446.77 - Step 5: Solve for x
x = 588,616,741,446.77/871,405.43 - Step 6: Final answer
x = 675,479.77
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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.