Finding the Fourth Proportional to 490,915.13, 677,458.64 and 276,050.62
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Solution
The fourth proportional to 490,915.13, 677,458.64 and 276,050.62 is: 380,947.47
Step by Step Solution
- Step 1: Write the proportion equation
490,915.13 : 677,458.64 = 276,050.62 : x - Step 2: Convert to fraction form
490,915.13/677,458.64 = 276,050.62/x - Step 3: Cross multiply
490,915.13x = 677,458.64 × 276,050.62 - Step 4: Simplify right side
490,915.13x = 187,012,877,596.36 - Step 5: Solve for x
x = 187,012,877,596.36/490,915.13 - Step 6: Final answer
x = 380,947.47
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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.