Finding the Fourth Proportional to 498,863.57, 688,386.56 and 281,107.70
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Solution
The fourth proportional to 498,863.57, 688,386.56 and 281,107.70 is: 387,903.17
Step by Step Solution
- Step 1: Write the proportion equation
498,863.57 : 688,386.56 = 281,107.70 : x - Step 2: Convert to fraction form
498,863.57/688,386.56 = 281,107.70/x - Step 3: Cross multiply
498,863.57x = 688,386.56 × 281,107.70 - Step 4: Simplify right side
498,863.57x = 193,510,757,745.04 - Step 5: Solve for x
x = 193,510,757,745.04/498,863.57 - Step 6: Final answer
x = 387,903.17
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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.