Finding the Fourth Proportional to 1,389,183.12, 1,917,370.58 and 904,884.12
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Solution
The fourth proportional to 1,389,183.12, 1,917,370.58 and 904,884.12 is: 1,248,934.11
Step by Step Solution
- Step 1: Write the proportion equation
1,389,183.12 : 1,917,370.58 = 904,884.12 : x - Step 2: Convert to fraction form
1,389,183.12/1,917,370.58 = 904,884.12/x - Step 3: Cross multiply
1,389,183.12x = 1,917,370.58 × 904,884.12 - Step 4: Simplify right side
1,389,183.12x = 1,734,998,185,472.77 - Step 5: Solve for x
x = 1,734,998,185,472.77/1,389,183.12 - Step 6: Final answer
x = 1,248,934.11
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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.