Finding the Fourth Proportional to 490,635.53, 676,977.78 and 286,647.05
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Solution
The fourth proportional to 490,635.53, 676,977.78 and 286,647.05 is: 395,514.95
Step by Step Solution
- Step 1: Write the proportion equation
490,635.53 : 676,977.78 = 286,647.05 : x - Step 2: Convert to fraction form
490,635.53/676,977.78 = 286,647.05/x - Step 3: Cross multiply
490,635.53x = 676,977.78 × 286,647.05 - Step 4: Simplify right side
490,635.53x = 194,053,685,715.28 - Step 5: Solve for x
x = 194,053,685,715.28/490,635.53 - Step 6: Final answer
x = 395,514.95
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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.