Finding the Fourth Proportional to 490,720.95, 677,148.26 and 286,819.65
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Solution
The fourth proportional to 490,720.95, 677,148.26 and 286,819.65 is: 395,783.85
Step by Step Solution
- Step 1: Write the proportion equation
490,720.95 : 677,148.26 = 286,819.65 : x - Step 2: Convert to fraction form
490,720.95/677,148.26 = 286,819.65/x - Step 3: Cross multiply
490,720.95x = 677,148.26 × 286,819.65 - Step 4: Simplify right side
490,720.95x = 194,219,425,497.21 - Step 5: Solve for x
x = 194,219,425,497.21/490,720.95 - Step 6: Final answer
x = 395,783.85
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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.