Finding the Fourth Proportional to 396,853.13, 547,136.18 and 286,379.06
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Solution
The fourth proportional to 396,853.13, 547,136.18 and 286,379.06 is: 394,827.03
Step by Step Solution
- Step 1: Write the proportion equation
396,853.13 : 547,136.18 = 286,379.06 : x - Step 2: Convert to fraction form
396,853.13/547,136.18 = 286,379.06/x - Step 3: Cross multiply
396,853.13x = 547,136.18 × 286,379.06 - Step 4: Simplify right side
396,853.13x = 156,688,340,752.82 - Step 5: Solve for x
x = 156,688,340,752.82/396,853.13 - Step 6: Final answer
x = 394,827.03
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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.