Finding the Fourth Proportional to 1,172,340.87, 1,618,134.53 and 663,338.49
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Solution
The fourth proportional to 1,172,340.87, 1,618,134.53 and 663,338.49 is: 915,579.20
Step by Step Solution
- Step 1: Write the proportion equation
1,172,340.87 : 1,618,134.53 = 663,338.49 : x - Step 2: Convert to fraction form
1,172,340.87/1,618,134.53 = 663,338.49/x - Step 3: Cross multiply
1,172,340.87x = 1,618,134.53 × 663,338.49 - Step 4: Simplify right side
1,172,340.87x = 1,073,370,915,747.06 - Step 5: Solve for x
x = 1,073,370,915,747.06/1,172,340.87 - Step 6: Final answer
x = 915,579.20
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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.