Finding the Fourth Proportional to 920,921.26, 1,381,588.98 and 281,171.48
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Solution
The fourth proportional to 920,921.26, 1,381,588.98 and 281,171.48 is: 421,820.45
Step by Step Solution
- Step 1: Write the proportion equation
920,921.26 : 1,381,588.98 = 281,171.48 : x - Step 2: Convert to fraction form
920,921.26/1,381,588.98 = 281,171.48/x - Step 3: Cross multiply
920,921.26x = 1,381,588.98 × 281,171.48 - Step 4: Simplify right side
920,921.26x = 388,463,416,852.43 - Step 5: Solve for x
x = 388,463,416,852.43/920,921.26 - Step 6: Final answer
x = 421,820.45
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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.