Finding the Fourth Proportional to 1,986,841.86, 2,742,219.72 and 1,127,482.08
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Solution
The fourth proportional to 1,986,841.86, 2,742,219.72 and 1,127,482.08 is: 1,556,139.75
Step by Step Solution
- Step 1: Write the proportion equation
1,986,841.86 : 2,742,219.72 = 1,127,482.08 : x - Step 2: Convert to fraction form
1,986,841.86/2,742,219.72 = 1,127,482.08/x - Step 3: Cross multiply
1,986,841.86x = 2,742,219.72 × 1,127,482.08 - Step 4: Simplify right side
1,986,841.86x = 3,091,803,593,722.62 - Step 5: Solve for x
x = 3,091,803,593,722.62/1,986,841.86 - Step 6: Final answer
x = 1,556,139.75
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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.