Finding the Fourth Proportional to 1,991,779.56, 2,748,642.84 and 1,132,340.04
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Solution
The fourth proportional to 1,991,779.56, 2,748,642.84 and 1,132,340.04 is: 1,562,621.89
Step by Step Solution
- Step 1: Write the proportion equation
1,991,779.56 : 2,748,642.84 = 1,132,340.04 : x - Step 2: Convert to fraction form
1,991,779.56/2,748,642.84 = 1,132,340.04/x - Step 3: Cross multiply
1,991,779.56x = 2,748,642.84 × 1,132,340.04 - Step 4: Simplify right side
1,991,779.56x = 3,112,398,343,391.31 - Step 5: Solve for x
x = 3,112,398,343,391.31/1,991,779.56 - Step 6: Final answer
x = 1,562,621.89
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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.