Finding the Fourth Proportional to 1,987,052.21, 2,742,489.90 and 1,171,208.26
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Solution
The fourth proportional to 1,987,052.21, 2,742,489.90 and 1,171,208.26 is: 1,616,478.33
Step by Step Solution
- Step 1: Write the proportion equation
1,987,052.21 : 2,742,489.90 = 1,171,208.26 : x - Step 2: Convert to fraction form
1,987,052.21/2,742,489.90 = 1,171,208.26/x - Step 3: Cross multiply
1,987,052.21x = 2,742,489.90 × 1,171,208.26 - Step 4: Simplify right side
1,987,052.21x = 3,212,026,827,274.69 - Step 5: Solve for x
x = 3,212,026,827,274.69/1,987,052.21 - Step 6: Final answer
x = 1,616,478.33
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.