Finding the Fourth Proportional to 391,497.40, 587,246.10 and 328,511.80
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Solution
The fourth proportional to 391,497.40, 587,246.10 and 328,511.80 is: 492,767.70
Step by Step Solution
- Step 1: Write the proportion equation
391,497.40 : 587,246.10 = 328,511.80 : x - Step 2: Convert to fraction form
391,497.40/587,246.10 = 328,511.80/x - Step 3: Cross multiply
391,497.40x = 587,246.10 × 328,511.80 - Step 4: Simplify right side
391,497.40x = 192,917,273,353.98 - Step 5: Solve for x
x = 192,917,273,353.98/391,497.40 - Step 6: Final answer
x = 492,767.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.