Finding the Fourth Proportional to 1,103,966.20, 1,523,249.81 and 644,992.05
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Solution
The fourth proportional to 1,103,966.20, 1,523,249.81 and 644,992.05 is: 889,958.42
Step by Step Solution
- Step 1: Write the proportion equation
1,103,966.20 : 1,523,249.81 = 644,992.05 : x - Step 2: Convert to fraction form
1,103,966.20/1,523,249.81 = 644,992.05/x - Step 3: Cross multiply
1,103,966.20x = 1,523,249.81 × 644,992.05 - Step 4: Simplify right side
1,103,966.20x = 982,484,014,389.05 - Step 5: Solve for x
x = 982,484,014,389.05/1,103,966.20 - Step 6: Final answer
x = 889,958.42
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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.