Finding the Fourth Proportional to 1,989,705.13, 2,743,842.45 and 1,263,291.73
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Solution
The fourth proportional to 1,989,705.13, 2,743,842.45 and 1,263,291.73 is: 1,742,104.11
Step by Step Solution
- Step 1: Write the proportion equation
1,989,705.13 : 2,743,842.45 = 1,263,291.73 : x - Step 2: Convert to fraction form
1,989,705.13/2,743,842.45 = 1,263,291.73/x - Step 3: Cross multiply
1,989,705.13x = 2,743,842.45 × 1,263,291.73 - Step 4: Simplify right side
1,989,705.13x = 3,466,273,475,507.94 - Step 5: Solve for x
x = 3,466,273,475,507.94/1,989,705.13 - Step 6: Final answer
x = 1,742,104.11
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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.