Finding the Fourth Proportional to 434,658.20, 651,987.30 and 418,911.80
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Solution
The fourth proportional to 434,658.20, 651,987.30 and 418,911.80 is: 628,367.70
Step by Step Solution
- Step 1: Write the proportion equation
434,658.20 : 651,987.30 = 418,911.80 : x - Step 2: Convert to fraction form
434,658.20/651,987.30 = 418,911.80/x - Step 3: Cross multiply
434,658.20x = 651,987.30 × 418,911.80 - Step 4: Simplify right side
434,658.20x = 273,125,173,420.14 - Step 5: Solve for x
x = 273,125,173,420.14/434,658.20 - Step 6: Final answer
x = 628,367.70
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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.