Finding the Fourth Proportional to 645,479.87, 967,334.01 and 408,398.13
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Solution
The fourth proportional to 645,479.87, 967,334.01 and 408,398.13 is: 612,036.75
Step by Step Solution
- Step 1: Write the proportion equation
645,479.87 : 967,334.01 = 408,398.13 : x - Step 2: Convert to fraction form
645,479.87/967,334.01 = 408,398.13/x - Step 3: Cross multiply
645,479.87x = 967,334.01 × 408,398.13 - Step 4: Simplify right side
645,479.87x = 395,057,400,769.40 - Step 5: Solve for x
x = 395,057,400,769.40/645,479.87 - Step 6: Final answer
x = 612,036.75
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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.