Finding the Fourth Proportional to 672,850,761.68, 1,009,269,414.12 and 212,789,009.36
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Solution
The fourth proportional to 672,850,761.68, 1,009,269,414.12 and 212,789,009.36 is: 319,181,386.18
Step by Step Solution
- Step 1: Write the proportion equation
672,850,761.68 : 1,009,269,414.12 = 212,789,009.36 : x - Step 2: Convert to fraction form
672,850,761.68/1,009,269,414.12 = 212,789,009.36/x - Step 3: Cross multiply
672,850,761.68x = 1,009,269,414.12 × 212,789,009.36 - Step 4: Simplify right side
672,850,761.68x = 214,761,438,807,942,400 - Step 5: Solve for x
x = 214,761,438,807,942,400/672,850,761.68 - Step 6: Final answer
x = 319,181,386.18
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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.