Finding the Fourth Proportional to 398,971,633.80, 598,457,450.70 and 381,965,521.80
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Solution
The fourth proportional to 398,971,633.80, 598,457,450.70 and 381,965,521.80 is: 572,948,282.70
Step by Step Solution
- Step 1: Write the proportion equation
398,971,633.80 : 598,457,450.70 = 381,965,521.80 : x - Step 2: Convert to fraction form
398,971,633.80/598,457,450.70 = 381,965,521.80/x - Step 3: Cross multiply
398,971,633.80x = 598,457,450.70 × 381,965,521.80 - Step 4: Simplify right side
398,971,633.80x = 228,590,112,431,723,296 - Step 5: Solve for x
x = 228,590,112,431,723,296/398,971,633.80 - Step 6: Final answer
x = 572,948,282.70
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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.