Finding the Fourth Proportional to 971,995.20, 1,457,992.80 and 474,331.20
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Solution
The fourth proportional to 971,995.20, 1,457,992.80 and 474,331.20 is: 711,496.80
Step by Step Solution
- Step 1: Write the proportion equation
971,995.20 : 1,457,992.80 = 474,331.20 : x - Step 2: Convert to fraction form
971,995.20/1,457,992.80 = 474,331.20/x - Step 3: Cross multiply
971,995.20x = 1,457,992.80 × 474,331.20 - Step 4: Simplify right side
971,995.20x = 691,571,474,415.36 - Step 5: Solve for x
x = 691,571,474,415.36/971,995.20 - Step 6: Final answer
x = 711,496.80
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1.5x scale
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.