Finding the Fourth Proportional to 768,402.97, 1,153,416.08 and 431,731.33
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Solution
The fourth proportional to 768,402.97, 1,153,416.08 and 431,731.33 is: 648,053.01
Step by Step Solution
- Step 1: Write the proportion equation
768,402.97 : 1,153,416.08 = 431,731.33 : x - Step 2: Convert to fraction form
768,402.97/1,153,416.08 = 431,731.33/x - Step 3: Cross multiply
768,402.97x = 1,153,416.08 × 431,731.33 - Step 4: Simplify right side
768,402.97x = 497,965,856,103.13 - Step 5: Solve for x
x = 497,965,856,103.13/768,402.97 - Step 6: Final answer
x = 648,053.01
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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.