Finding the Fourth Proportional to 1,139,106.20, 1,707,815.68 and 689,721.44
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Solution
The fourth proportional to 1,139,106.20, 1,707,815.68 and 689,721.44 is: 1,034,071.35
Step by Step Solution
- Step 1: Write the proportion equation
1,139,106.20 : 1,707,815.68 = 689,721.44 : x - Step 2: Convert to fraction form
1,139,106.20/1,707,815.68 = 689,721.44/x - Step 3: Cross multiply
1,139,106.20x = 1,707,815.68 × 689,721.44 - Step 4: Simplify right side
1,139,106.20x = 1,177,917,079,800.80 - Step 5: Solve for x
x = 1,177,917,079,800.80/1,139,106.20 - Step 6: Final answer
x = 1,034,071.35
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.