Finding the Fourth Proportional to 643,584.24, 888,087.53 and 381,894.44
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Solution
The fourth proportional to 643,584.24, 888,087.53 and 381,894.44 is: 526,979.48
Step by Step Solution
- Step 1: Write the proportion equation
643,584.24 : 888,087.53 = 381,894.44 : x - Step 2: Convert to fraction form
643,584.24/888,087.53 = 381,894.44/x - Step 3: Cross multiply
643,584.24x = 888,087.53 × 381,894.44 - Step 4: Simplify right side
643,584.24x = 339,155,686,454.63 - Step 5: Solve for x
x = 339,155,686,454.63/643,584.24 - Step 6: Final answer
x = 526,979.48
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1.5x scale
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.