Finding the Fourth Proportional to 378,603,829.44, 522,497,178.72 and 213,531,168.96
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Solution
The fourth proportional to 378,603,829.44, 522,497,178.72 and 213,531,168.96 is: 294,686,489.35
Step by Step Solution
- Step 1: Write the proportion equation
378,603,829.44 : 522,497,178.72 = 213,531,168.96 : x - Step 2: Convert to fraction form
378,603,829.44/522,497,178.72 = 213,531,168.96/x - Step 3: Cross multiply
378,603,829.44x = 522,497,178.72 × 213,531,168.96 - Step 4: Simplify right side
378,603,829.44x = 111,569,433,350,383,648 - Step 5: Solve for x
x = 111,569,433,350,383,648/378,603,829.44 - Step 6: Final answer
x = 294,686,489.35
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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.