Finding the Fourth Proportional to 454,979.40, 682,469.10 and 313,261.80
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Solution
The fourth proportional to 454,979.40, 682,469.10 and 313,261.80 is: 469,892.70
Step by Step Solution
- Step 1: Write the proportion equation
454,979.40 : 682,469.10 = 313,261.80 : x - Step 2: Convert to fraction form
454,979.40/682,469.10 = 313,261.80/x - Step 3: Cross multiply
454,979.40x = 682,469.10 × 313,261.80 - Step 4: Simplify right side
454,979.40x = 213,791,498,710.38 - Step 5: Solve for x
x = 213,791,498,710.38/454,979.40 - Step 6: Final answer
x = 469,892.70
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1.5x scale
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.