Finding the Fourth Proportional to 447,584.05, 671,376.08 and 428,147.09
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Solution
The fourth proportional to 447,584.05, 671,376.08 and 428,147.09 is: 642,220.64
Step by Step Solution
- Step 1: Write the proportion equation
447,584.05 : 671,376.08 = 428,147.09 : x - Step 2: Convert to fraction form
447,584.05/671,376.08 = 428,147.09/x - Step 3: Cross multiply
447,584.05x = 671,376.08 × 428,147.09 - Step 4: Simplify right side
447,584.05x = 287,447,714,947.61 - Step 5: Solve for x
x = 287,447,714,947.61/447,584.05 - Step 6: Final answer
x = 642,220.64
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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.