Finding the Fourth Proportional to 1,543,389.92, 2,129,893.08 and 855,076.40
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Solution
The fourth proportional to 1,543,389.92, 2,129,893.08 and 855,076.40 is: 1,180,013.74
Step by Step Solution
- Step 1: Write the proportion equation
1,543,389.92 : 2,129,893.08 = 855,076.40 : x - Step 2: Convert to fraction form
1,543,389.92/2,129,893.08 = 855,076.40/x - Step 3: Cross multiply
1,543,389.92x = 2,129,893.08 × 855,076.40 - Step 4: Simplify right side
1,543,389.92x = 1,821,221,307,231.31 - Step 5: Solve for x
x = 1,821,221,307,231.31/1,543,389.92 - Step 6: Final answer
x = 1,180,013.74
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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.