Finding the Fourth Proportional to 1,987,759.44, 2,742,387.57 and 1,127,821.59
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Solution
The fourth proportional to 1,987,759.44, 2,742,387.57 and 1,127,821.59 is: 1,555,985.02
Step by Step Solution
- Step 1: Write the proportion equation
1,987,759.44 : 2,742,387.57 = 1,127,821.59 : x - Step 2: Convert to fraction form
1,987,759.44/2,742,387.57 = 1,127,821.59/x - Step 3: Cross multiply
1,987,759.44x = 2,742,387.57 × 1,127,821.59 - Step 4: Simplify right side
1,987,759.44x = 3,092,923,909,593.64 - Step 5: Solve for x
x = 3,092,923,909,593.64/1,987,759.44 - Step 6: Final answer
x = 1,555,985.02
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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.