Finding the Fourth Proportional to 491,246.10, 677,912.67 and 276,385.65
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Solution
The fourth proportional to 491,246.10, 677,912.67 and 276,385.65 is: 381,408.29
Step by Step Solution
- Step 1: Write the proportion equation
491,246.10 : 677,912.67 = 276,385.65 : x - Step 2: Convert to fraction form
491,246.10/677,912.67 = 276,385.65/x - Step 3: Cross multiply
491,246.10x = 677,912.67 × 276,385.65 - Step 4: Simplify right side
491,246.10x = 187,365,333,941.19 - Step 5: Solve for x
x = 187,365,333,941.19/491,246.10 - Step 6: Final answer
x = 381,408.29
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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.