Finding the Fourth Proportional to 520,396.95, 718,175.21 and 316,414.09
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Solution
The fourth proportional to 520,396.95, 718,175.21 and 316,414.09 is: 436,668.12
Step by Step Solution
- Step 1: Write the proportion equation
520,396.95 : 718,175.21 = 316,414.09 : x - Step 2: Convert to fraction form
520,396.95/718,175.21 = 316,414.09/x - Step 3: Cross multiply
520,396.95x = 718,175.21 × 316,414.09 - Step 4: Simplify right side
520,396.95x = 227,240,756,034.91 - Step 5: Solve for x
x = 227,240,756,034.91/520,396.95 - Step 6: Final answer
x = 436,668.12
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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.