Finding the Fourth Proportional to 396,854.13, 547,137.55 and 286,380.06
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Solution
The fourth proportional to 396,854.13, 547,137.55 and 286,380.06 is: 394,828.41
Step by Step Solution
- Step 1: Write the proportion equation
396,854.13 : 547,137.55 = 286,380.06 : x - Step 2: Convert to fraction form
396,854.13/547,137.55 = 286,380.06/x - Step 3: Cross multiply
396,854.13x = 547,137.55 × 286,380.06 - Step 4: Simplify right side
396,854.13x = 156,689,284,397.25 - Step 5: Solve for x
x = 156,689,284,397.25/396,854.13 - Step 6: Final answer
x = 394,828.41
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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.