Finding the Fourth Proportional to 1,125,917.08, 1,553,876.49 and 642,554.98
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Solution
The fourth proportional to 1,125,917.08, 1,553,876.49 and 642,554.98 is: 886,789.17
Step by Step Solution
- Step 1: Write the proportion equation
1,125,917.08 : 1,553,876.49 = 642,554.98 : x - Step 2: Convert to fraction form
1,125,917.08/1,553,876.49 = 642,554.98/x - Step 3: Cross multiply
1,125,917.08x = 1,553,876.49 × 642,554.98 - Step 4: Simplify right side
1,125,917.08x = 998,451,075,479.31 - Step 5: Solve for x
x = 998,451,075,479.31/1,125,917.08 - Step 6: Final answer
x = 886,789.17
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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.