Finding the Fourth Proportional to 1,557,916.13, 2,149,930.74 and 842,524.13
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Solution
The fourth proportional to 1,557,916.13, 2,149,930.74 and 842,524.13 is: 1,162,686.80
Step by Step Solution
- Step 1: Write the proportion equation
1,557,916.13 : 2,149,930.74 = 842,524.13 : x - Step 2: Convert to fraction form
1,557,916.13/2,149,930.74 = 842,524.13/x - Step 3: Cross multiply
1,557,916.13x = 2,149,930.74 × 842,524.13 - Step 4: Simplify right side
1,557,916.13x = 1,811,368,515,529.10 - Step 5: Solve for x
x = 1,811,368,515,529.10/1,557,916.13 - Step 6: Final answer
x = 1,162,686.80
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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.