Finding the Fourth Proportional to 641,215.64, 884,903.64 and 354,730.79
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Solution
The fourth proportional to 641,215.64, 884,903.64 and 354,730.79 is: 489,542.90
Step by Step Solution
- Step 1: Write the proportion equation
641,215.64 : 884,903.64 = 354,730.79 : x - Step 2: Convert to fraction form
641,215.64/884,903.64 = 354,730.79/x - Step 3: Cross multiply
641,215.64x = 884,903.64 × 354,730.79 - Step 4: Simplify right side
641,215.64x = 313,902,568,173.09 - Step 5: Solve for x
x = 313,902,568,173.09/641,215.64 - Step 6: Final answer
x = 489,542.90
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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.