Finding the Fourth Proportional to 1,987,562.88, 2,742,849.54 and 1,128,137.49
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Solution
The fourth proportional to 1,987,562.88, 2,742,849.54 and 1,128,137.49 is: 1,556,836.98
Step by Step Solution
- Step 1: Write the proportion equation
1,987,562.88 : 2,742,849.54 = 1,128,137.49 : x - Step 2: Convert to fraction form
1,987,562.88/2,742,849.54 = 1,128,137.49/x - Step 3: Cross multiply
1,987,562.88x = 2,742,849.54 × 1,128,137.49 - Step 4: Simplify right side
1,987,562.88x = 3,094,311,395,503.25 - Step 5: Solve for x
x = 3,094,311,395,503.25/1,987,562.88 - Step 6: Final answer
x = 1,556,836.98
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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.