Finding the Fourth Proportional to 1,289,719.70, 1,934,579.55 and 1,165,716.80
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Solution
The fourth proportional to 1,289,719.70, 1,934,579.55 and 1,165,716.80 is: 1,748,575.20
Step by Step Solution
- Step 1: Write the proportion equation
1,289,719.70 : 1,934,579.55 = 1,165,716.80 : x - Step 2: Convert to fraction form
1,289,719.70/1,934,579.55 = 1,165,716.80/x - Step 3: Cross multiply
1,289,719.70x = 1,934,579.55 × 1,165,716.80 - Step 4: Simplify right side
1,289,719.70x = 2,255,171,882,371.44 - Step 5: Solve for x
x = 2,255,171,882,371.44/1,289,719.70 - Step 6: Final answer
x = 1,748,575.20
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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.