Finding the Fourth Proportional to 1,188,115.84, 1,782,351.68 and 430,134.72
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Solution
The fourth proportional to 1,188,115.84, 1,782,351.68 and 430,134.72 is: 645,266.49
Step by Step Solution
- Step 1: Write the proportion equation
1,188,115.84 : 1,782,351.68 = 430,134.72 : x - Step 2: Convert to fraction form
1,188,115.84/1,782,351.68 = 430,134.72/x - Step 3: Cross multiply
1,188,115.84x = 1,782,351.68 × 430,134.72 - Step 4: Simplify right side
1,188,115.84x = 766,651,340,818.33 - Step 5: Solve for x
x = 766,651,340,818.33/1,188,115.84 - Step 6: Final answer
x = 645,266.49
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.