Finding the Fourth Proportional to 1,989,126.13, 2,745,323.27 and 1,173,529.21
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Solution
The fourth proportional to 1,989,126.13, 2,745,323.27 and 1,173,529.21 is: 1,619,664.53
Step by Step Solution
- Step 1: Write the proportion equation
1,989,126.13 : 2,745,323.27 = 1,173,529.21 : x - Step 2: Convert to fraction form
1,989,126.13/2,745,323.27 = 1,173,529.21/x - Step 3: Cross multiply
1,989,126.13x = 2,745,323.27 × 1,173,529.21 - Step 4: Simplify right side
1,989,126.13x = 3,221,717,048,237.72 - Step 5: Solve for x
x = 3,221,717,048,237.72/1,989,126.13 - Step 6: Final answer
x = 1,619,664.53
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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.