Finding the Fourth Proportional to 639,488,181.26, 882,125,404.74 and 384,992,519.03
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Solution
The fourth proportional to 639,488,181.26, 882,125,404.74 and 384,992,519.03 is: 531,067,956.57
Step by Step Solution
- Step 1: Write the proportion equation
639,488,181.26 : 882,125,404.74 = 384,992,519.03 : x - Step 2: Convert to fraction form
639,488,181.26/882,125,404.74 = 384,992,519.03/x - Step 3: Cross multiply
639,488,181.26x = 882,125,404.74 × 384,992,519.03 - Step 4: Simplify right side
639,488,181.26x = 339,611,681,666,800,256 - Step 5: Solve for x
x = 339,611,681,666,800,256/639,488,181.26 - Step 6: Final answer
x = 531,067,956.57
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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.