Finding the Fourth Proportional to 3,909,174,437.31, 5,394,622,397.88 and 2,124,921,731.28
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Solution
The fourth proportional to 3,909,174,437.31, 5,394,622,397.88 and 2,124,921,731.28 is: 2,932,371,156.40
Step by Step Solution
- Step 1: Write the proportion equation
3,909,174,437.31 : 5,394,622,397.88 = 2,124,921,731.28 : x - Step 2: Convert to fraction form
3,909,174,437.31/5,394,622,397.88 = 2,124,921,731.28/x - Step 3: Cross multiply
3,909,174,437.31x = 5,394,622,397.88 × 2,124,921,731.28 - Step 4: Simplify right side
3,909,174,437.31x = 11,463,150,365,305,034,752 - Step 5: Solve for x
x = 11,463,150,365,305,034,752/3,909,174,437.31 - Step 6: Final answer
x = 2,932,371,156.40
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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.