Finding the Fourth Proportional to 1,998,868.38, 2,758,430.14 and 1,081,098.55
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Solution
The fourth proportional to 1,998,868.38, 2,758,430.14 and 1,081,098.55 is: 1,491,911.55
Step by Step Solution
- Step 1: Write the proportion equation
1,998,868.38 : 2,758,430.14 = 1,081,098.55 : x - Step 2: Convert to fraction form
1,998,868.38/2,758,430.14 = 1,081,098.55/x - Step 3: Cross multiply
1,998,868.38x = 2,758,430.14 × 1,081,098.55 - Step 4: Simplify right side
1,998,868.38x = 2,982,134,824,630.30 - Step 5: Solve for x
x = 2,982,134,824,630.30/1,998,868.38 - Step 6: Final answer
x = 1,491,911.55
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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.