Finding the Fourth Proportional to 412,278.11, 618,408.41 and 112,758.70
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Solution
The fourth proportional to 412,278.11, 618,408.41 and 112,758.70 is: 169,135.65
Step by Step Solution
- Step 1: Write the proportion equation
412,278.11 : 618,408.41 = 112,758.70 : x - Step 2: Convert to fraction form
412,278.11/618,408.41 = 112,758.70/x - Step 3: Cross multiply
412,278.11x = 618,408.41 × 112,758.70 - Step 4: Simplify right side
412,278.11x = 69,730,924,724.83 - Step 5: Solve for x
x = 69,730,924,724.83/412,278.11 - Step 6: Final answer
x = 169,135.65
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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.