Finding the Fourth Proportional to 645,579.12, 967,356.48 and 408,420.84
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Solution
The fourth proportional to 645,579.12, 967,356.48 and 408,420.84 is: 611,990.90
Step by Step Solution
- Step 1: Write the proportion equation
645,579.12 : 967,356.48 = 408,420.84 : x - Step 2: Convert to fraction form
645,579.12/967,356.48 = 408,420.84/x - Step 3: Cross multiply
645,579.12x = 967,356.48 × 408,420.84 - Step 4: Simplify right side
645,579.12x = 395,088,546,141.04 - Step 5: Solve for x
x = 395,088,546,141.04/645,579.12 - Step 6: Final answer
x = 611,990.90
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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.