Finding the Fourth Proportional to 442,813.20, 664,219.80 and 418,318.80
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Solution
The fourth proportional to 442,813.20, 664,219.80 and 418,318.80 is: 627,478.20
Step by Step Solution
- Step 1: Write the proportion equation
442,813.20 : 664,219.80 = 418,318.80 : x - Step 2: Convert to fraction form
442,813.20/664,219.80 = 418,318.80/x - Step 3: Cross multiply
442,813.20x = 664,219.80 × 418,318.80 - Step 4: Simplify right side
442,813.20x = 277,855,629,672.24 - Step 5: Solve for x
x = 277,855,629,672.24/442,813.20 - Step 6: Final answer
x = 627,478.20
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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.