Finding the Fourth Proportional to 613,404.70, 920,107.05 and 313,785.70
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Solution
The fourth proportional to 613,404.70, 920,107.05 and 313,785.70 is: 470,678.55
Step by Step Solution
- Step 1: Write the proportion equation
613,404.70 : 920,107.05 = 313,785.70 : x - Step 2: Convert to fraction form
613,404.70/920,107.05 = 313,785.70/x - Step 3: Cross multiply
613,404.70x = 920,107.05 × 313,785.70 - Step 4: Simplify right side
613,404.70x = 288,716,434,759.19 - Step 5: Solve for x
x = 288,716,434,759.19/613,404.70 - Step 6: Final answer
x = 470,678.55
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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.