Finding the Fourth Proportional to 490,855.84, 677,377.68 and 278,887.84
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Solution
The fourth proportional to 490,855.84, 677,377.68 and 278,887.84 is: 384,863.30
Step by Step Solution
- Step 1: Write the proportion equation
490,855.84 : 677,377.68 = 278,887.84 : x - Step 2: Convert to fraction form
490,855.84/677,377.68 = 278,887.84/x - Step 3: Cross multiply
490,855.84x = 677,377.68 × 278,887.84 - Step 4: Simplify right side
490,855.84x = 188,912,398,039.41 - Step 5: Solve for x
x = 188,912,398,039.41/490,855.84 - Step 6: Final answer
x = 384,863.30
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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.