Finding the Fourth Proportional to 490,993.40, 677,492.16 and 276,132.80
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Solution
The fourth proportional to 490,993.40, 677,492.16 and 276,132.80 is: 381,018.99
Step by Step Solution
- Step 1: Write the proportion equation
490,993.40 : 677,492.16 = 276,132.80 : x - Step 2: Convert to fraction form
490,993.40/677,492.16 = 276,132.80/x - Step 3: Cross multiply
490,993.40x = 677,492.16 × 276,132.80 - Step 4: Simplify right side
490,993.40x = 187,077,807,118.85 - Step 5: Solve for x
x = 187,077,807,118.85/490,993.40 - Step 6: Final answer
x = 381,018.99
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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.