Finding the Fourth Proportional to 478,736.20, 718,104.30 and 279,281.80
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Solution
The fourth proportional to 478,736.20, 718,104.30 and 279,281.80 is: 418,922.70
Step by Step Solution
- Step 1: Write the proportion equation
478,736.20 : 718,104.30 = 279,281.80 : x - Step 2: Convert to fraction form
478,736.20/718,104.30 = 279,281.80/x - Step 3: Cross multiply
478,736.20x = 718,104.30 × 279,281.80 - Step 4: Simplify right side
478,736.20x = 200,553,461,491.74 - Step 5: Solve for x
x = 200,553,461,491.74/478,736.20 - Step 6: Final answer
x = 418,922.70
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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.