Finding the Fourth Proportional to 512,913.36, 768,682.28 and 399,198.52
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Solution
The fourth proportional to 512,913.36, 768,682.28 and 399,198.52 is: 598,262.50
Step by Step Solution
- Step 1: Write the proportion equation
512,913.36 : 768,682.28 = 399,198.52 : x - Step 2: Convert to fraction form
512,913.36/768,682.28 = 399,198.52/x - Step 3: Cross multiply
512,913.36x = 768,682.28 × 399,198.52 - Step 4: Simplify right side
512,913.36x = 306,856,828,526.23 - Step 5: Solve for x
x = 306,856,828,526.23/512,913.36 - Step 6: Final answer
x = 598,262.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.