Finding the Fourth Proportional to 512,965.44, 772,949.52 and 421,519.68
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Solution
The fourth proportional to 512,965.44, 772,949.52 and 421,519.68 is: 635,156.70
Step by Step Solution
- Step 1: Write the proportion equation
512,965.44 : 772,949.52 = 421,519.68 : x - Step 2: Convert to fraction form
512,965.44/772,949.52 = 421,519.68/x - Step 3: Cross multiply
512,965.44x = 772,949.52 × 421,519.68 - Step 4: Simplify right side
512,965.44x = 325,813,434,326.55 - Step 5: Solve for x
x = 325,813,434,326.55/512,965.44 - Step 6: Final answer
x = 635,156.70
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.