Finding the Fourth Proportional to 391,537.80, 587,306.70 and 343,326.60
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Solution
The fourth proportional to 391,537.80, 587,306.70 and 343,326.60 is: 514,989.90
Step by Step Solution
- Step 1: Write the proportion equation
391,537.80 : 587,306.70 = 343,326.60 : x - Step 2: Convert to fraction form
391,537.80/587,306.70 = 343,326.60/x - Step 3: Cross multiply
391,537.80x = 587,306.70 × 343,326.60 - Step 4: Simplify right side
391,537.80x = 201,638,012,468.22 - Step 5: Solve for x
x = 201,638,012,468.22/391,537.80 - Step 6: Final answer
x = 514,989.90
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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.