Finding the Fourth Proportional to 518,769.87, 715,884.79 and 286,206.11
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Solution
The fourth proportional to 518,769.87, 715,884.79 and 286,206.11 is: 394,954.70
Step by Step Solution
- Step 1: Write the proportion equation
518,769.87 : 715,884.79 = 286,206.11 : x - Step 2: Convert to fraction form
518,769.87/715,884.79 = 286,206.11/x - Step 3: Cross multiply
518,769.87x = 715,884.79 × 286,206.11 - Step 4: Simplify right side
518,769.87x = 204,890,599,523.04 - Step 5: Solve for x
x = 204,890,599,523.04/518,769.87 - Step 6: Final answer
x = 394,954.70
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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.