Finding the Fourth Proportional to 449,078.18, 618,675.18 and 312,865.75
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Solution
The fourth proportional to 449,078.18, 618,675.18 and 312,865.75 is: 431,021.32
Step by Step Solution
- Step 1: Write the proportion equation
449,078.18 : 618,675.18 = 312,865.75 : x - Step 2: Convert to fraction form
449,078.18/618,675.18 = 312,865.75/x - Step 3: Cross multiply
449,078.18x = 618,675.18 × 312,865.75 - Step 4: Simplify right side
449,078.18x = 193,562,271,103.71 - Step 5: Solve for x
x = 193,562,271,103.71/449,078.18 - Step 6: Final answer
x = 431,021.32
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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.