Finding the Fourth Proportional to 456,135.74, 629,329.16 and 318,311.00
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Solution
The fourth proportional to 456,135.74, 629,329.16 and 318,311.00 is: 439,172.76
Step by Step Solution
- Step 1: Write the proportion equation
456,135.74 : 629,329.16 = 318,311.00 : x - Step 2: Convert to fraction form
456,135.74/629,329.16 = 318,311.00/x - Step 3: Cross multiply
456,135.74x = 629,329.16 × 318,311.00 - Step 4: Simplify right side
456,135.74x = 200,322,389,510.56 - Step 5: Solve for x
x = 200,322,389,510.56/456,135.74 - Step 6: Final answer
x = 439,172.76
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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.