Finding the Fourth Proportional to 7,982,919.90, 11,013,303.51 and 4,921,819.74
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Solution
The fourth proportional to 7,982,919.90, 11,013,303.51 and 4,921,819.74 is: 6,790,183.95
Step by Step Solution
- Step 1: Write the proportion equation
7,982,919.90 : 11,013,303.51 = 4,921,819.74 : x - Step 2: Convert to fraction form
7,982,919.90/11,013,303.51 = 4,921,819.74/x - Step 3: Cross multiply
7,982,919.90x = 11,013,303.51 × 4,921,819.74 - Step 4: Simplify right side
7,982,919.90x = 54,205,494,618,129.29 - Step 5: Solve for x
x = 54,205,494,618,129.29/7,982,919.90 - Step 6: Final answer
x = 6,790,183.95
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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.