Finding the Fourth Proportional to 857,153.10, 1,286,276.40 and 408,380.70
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Solution
The fourth proportional to 857,153.10, 1,286,276.40 and 408,380.70 is: 612,831.54
Step by Step Solution
- Step 1: Write the proportion equation
857,153.10 : 1,286,276.40 = 408,380.70 : x - Step 2: Convert to fraction form
857,153.10/1,286,276.40 = 408,380.70/x - Step 3: Cross multiply
857,153.10x = 1,286,276.40 × 408,380.70 - Step 4: Simplify right side
857,153.10x = 525,290,456,625.48 - Step 5: Solve for x
x = 525,290,456,625.48/857,153.10 - Step 6: Final answer
x = 612,831.54
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.