Finding the Fourth Proportional to 1,127,811.33, 1,556,235.79 and 644,407.79
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Solution
The fourth proportional to 1,127,811.33, 1,556,235.79 and 644,407.79 is: 889,200.55
Step by Step Solution
- Step 1: Write the proportion equation
1,127,811.33 : 1,556,235.79 = 644,407.79 : x - Step 2: Convert to fraction form
1,127,811.33/1,556,235.79 = 644,407.79/x - Step 3: Cross multiply
1,127,811.33x = 1,556,235.79 × 644,407.79 - Step 4: Simplify right side
1,127,811.33x = 1,002,850,456,760.61 - Step 5: Solve for x
x = 1,002,850,456,760.61/1,127,811.33 - Step 6: Final answer
x = 889,200.55
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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.