Finding the Fourth Proportional to 1,287,789.12, 1,777,155.84 and 804,634.44
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Solution
The fourth proportional to 1,287,789.12, 1,777,155.84 and 804,634.44 is: 1,110,399.81
Step by Step Solution
- Step 1: Write the proportion equation
1,287,789.12 : 1,777,155.84 = 804,634.44 : x - Step 2: Convert to fraction form
1,287,789.12/1,777,155.84 = 804,634.44/x - Step 3: Cross multiply
1,287,789.12x = 1,777,155.84 × 804,634.44 - Step 4: Simplify right side
1,287,789.12x = 1,429,960,794,111.13 - Step 5: Solve for x
x = 1,429,960,794,111.13/1,287,789.12 - Step 6: Final answer
x = 1,110,399.81
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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.