Finding the Fourth Proportional to 1,553,559.12, 2,143,604.64 and 981,383.76
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Solution
The fourth proportional to 1,553,559.12, 2,143,604.64 and 981,383.76 is: 1,354,115.69
Step by Step Solution
- Step 1: Write the proportion equation
1,553,559.12 : 2,143,604.64 = 981,383.76 : x - Step 2: Convert to fraction form
1,553,559.12/2,143,604.64 = 981,383.76/x - Step 3: Cross multiply
1,553,559.12x = 2,143,604.64 × 981,383.76 - Step 4: Simplify right side
1,553,559.12x = 2,103,698,781,556.65 - Step 5: Solve for x
x = 2,103,698,781,556.65/1,553,559.12 - Step 6: Final answer
x = 1,354,115.69
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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.