Finding the Fourth Proportional to 449,079.18, 618,676.56 and 312,866.75
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Solution
The fourth proportional to 449,079.18, 618,676.56 and 312,866.75 is: 431,022.71
Step by Step Solution
- Step 1: Write the proportion equation
449,079.18 : 618,676.56 = 312,866.75 : x - Step 2: Convert to fraction form
449,079.18/618,676.56 = 312,866.75/x - Step 3: Cross multiply
449,079.18x = 618,676.56 × 312,866.75 - Step 4: Simplify right side
449,079.18x = 193,563,324,628.38 - Step 5: Solve for x
x = 193,563,324,628.38/449,079.18 - Step 6: Final answer
x = 431,022.71
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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.