Finding the Fourth Proportional to 442,814.20, 664,221.30 and 418,319.80
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Solution
The fourth proportional to 442,814.20, 664,221.30 and 418,319.80 is: 627,479.70
Step by Step Solution
- Step 1: Write the proportion equation
442,814.20 : 664,221.30 = 418,319.80 : x - Step 2: Convert to fraction form
442,814.20/664,221.30 = 418,319.80/x - Step 3: Cross multiply
442,814.20x = 664,221.30 × 418,319.80 - Step 4: Simplify right side
442,814.20x = 277,856,921,371.74 - Step 5: Solve for x
x = 277,856,921,371.74/442,814.20 - Step 6: Final answer
x = 627,479.70
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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.