Finding the Fourth Proportional to 644,444.20, 965,744.70 and 474,639.40
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Solution
The fourth proportional to 644,444.20, 965,744.70 and 474,639.40 is: 711,280.33
Step by Step Solution
- Step 1: Write the proportion equation
644,444.20 : 965,744.70 = 474,639.40 : x - Step 2: Convert to fraction form
644,444.20/965,744.70 = 474,639.40/x - Step 3: Cross multiply
644,444.20x = 965,744.70 × 474,639.40 - Step 4: Simplify right side
644,444.20x = 458,380,484,961.18 - Step 5: Solve for x
x = 458,380,484,961.18/644,444.20 - Step 6: Final answer
x = 711,280.33
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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.