Finding the Fourth Proportional to 378,699,858.90, 522,600,717.60 and 211,438,683
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Solution
The fourth proportional to 378,699,858.90, 522,600,717.60 and 211,438,683 is: 291,782,541.95
Step by Step Solution
- Step 1: Write the proportion equation
378,699,858.90 : 522,600,717.60 = 211,438,683 : x - Step 2: Convert to fraction form
378,699,858.90/522,600,717.60 = 211,438,683/x - Step 3: Cross multiply
378,699,858.90x = 522,600,717.60 × 211,438,683 - Step 4: Simplify right side
378,699,858.90x = 110,498,007,464,198,928 - Step 5: Solve for x
x = 110,498,007,464,198,928/378,699,858.90 - Step 6: Final answer
x = 291,782,541.95
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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.