Finding the Fourth Proportional to 1,216,581.99, 1,678,858.59 and 672,740.70
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Solution
The fourth proportional to 1,216,581.99, 1,678,858.59 and 672,740.70 is: 928,368.59
Step by Step Solution
- Step 1: Write the proportion equation
1,216,581.99 : 1,678,858.59 = 672,740.70 : x - Step 2: Convert to fraction form
1,216,581.99/1,678,858.59 = 672,740.70/x - Step 3: Cross multiply
1,216,581.99x = 1,678,858.59 × 672,740.70 - Step 4: Simplify right side
1,216,581.99x = 1,129,436,503,037.61 - Step 5: Solve for x
x = 1,129,436,503,037.61/1,216,581.99 - Step 6: Final answer
x = 928,368.59
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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.