Finding the Fourth Proportional to 3,415,682.88, 5,116,438.08 and 1,991,419.20
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Solution
The fourth proportional to 3,415,682.88, 5,116,438.08 and 1,991,419.20 is: 2,982,997.36
Step by Step Solution
- Step 1: Write the proportion equation
3,415,682.88 : 5,116,438.08 = 1,991,419.20 : x - Step 2: Convert to fraction form
3,415,682.88/5,116,438.08 = 1,991,419.20/x - Step 3: Cross multiply
3,415,682.88x = 5,116,438.08 × 1,991,419.20 - Step 4: Simplify right side
3,415,682.88x = 10,188,973,028,123.14 - Step 5: Solve for x
x = 10,188,973,028,123.14/3,415,682.88 - Step 6: Final answer
x = 2,982,997.36
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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.