Finding the Fourth Proportional to 396,851.62, 547,134.11 and 286,377.55
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Solution
The fourth proportional to 396,851.62, 547,134.11 and 286,377.55 is: 394,824.96
Step by Step Solution
- Step 1: Write the proportion equation
396,851.62 : 547,134.11 = 286,377.55 : x - Step 2: Convert to fraction form
396,851.62/547,134.11 = 286,377.55/x - Step 3: Cross multiply
396,851.62x = 547,134.11 × 286,377.55 - Step 4: Simplify right side
396,851.62x = 156,686,925,756.24 - Step 5: Solve for x
x = 156,686,925,756.24/396,851.62 - Step 6: Final answer
x = 394,824.96
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1.5x scale
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.