Finding the Fourth Proportional to 1,986,805.64, 2,742,169.70 and 1,127,445.88
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Solution
The fourth proportional to 1,986,805.64, 2,742,169.70 and 1,127,445.88 is: 1,556,089.77
Step by Step Solution
- Step 1: Write the proportion equation
1,986,805.64 : 2,742,169.70 = 1,127,445.88 : x - Step 2: Convert to fraction form
1,986,805.64/2,742,169.70 = 1,127,445.88/x - Step 3: Cross multiply
1,986,805.64x = 2,742,169.70 × 1,127,445.88 - Step 4: Simplify right side
1,986,805.64x = 3,091,647,930,525.84 - Step 5: Solve for x
x = 3,091,647,930,525.84/1,986,805.64 - Step 6: Final answer
x = 1,556,089.77
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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.