Finding the Fourth Proportional to 687,910.14, 949,403.58 and 415,979.98
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Solution
The fourth proportional to 687,910.14, 949,403.58 and 415,979.98 is: 574,105.34
Step by Step Solution
- Step 1: Write the proportion equation
687,910.14 : 949,403.58 = 415,979.98 : x - Step 2: Convert to fraction form
687,910.14/949,403.58 = 415,979.98/x - Step 3: Cross multiply
687,910.14x = 949,403.58 × 415,979.98 - Step 4: Simplify right side
687,910.14x = 394,932,882,220.33 - Step 5: Solve for x
x = 394,932,882,220.33/687,910.14 - Step 6: Final answer
x = 574,105.34
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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.