Finding the Fourth Proportional to 512,911.13, 768,736.07 and 287,798.63
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Solution
The fourth proportional to 512,911.13, 768,736.07 and 287,798.63 is: 431,344.09
Step by Step Solution
- Step 1: Write the proportion equation
512,911.13 : 768,736.07 = 287,798.63 : x - Step 2: Convert to fraction form
512,911.13/768,736.07 = 287,798.63/x - Step 3: Cross multiply
512,911.13x = 768,736.07 × 287,798.63 - Step 4: Simplify right side
512,911.13x = 221,241,182,494.91 - Step 5: Solve for x
x = 221,241,182,494.91/512,911.13 - Step 6: Final answer
x = 431,344.09
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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.