Finding the Fourth Proportional to 920,986.97, 1,381,628.12 and 388,586.43
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Solution
The fourth proportional to 920,986.97, 1,381,628.12 and 388,586.43 is: 582,941.95
Step by Step Solution
- Step 1: Write the proportion equation
920,986.97 : 1,381,628.12 = 388,586.43 : x - Step 2: Convert to fraction form
920,986.97/1,381,628.12 = 388,586.43/x - Step 3: Cross multiply
920,986.97x = 1,381,628.12 × 388,586.43 - Step 4: Simplify right side
920,986.97x = 536,881,936,795.48 - Step 5: Solve for x
x = 536,881,936,795.48/920,986.97 - Step 6: Final answer
x = 582,941.95
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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.