Finding the Fourth Proportional to 431,410,307.99, 646,088,267.36 and 275,481,128.39
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Solution
The fourth proportional to 431,410,307.99, 646,088,267.36 and 275,481,128.39 is: 412,565,767.75
Step by Step Solution
- Step 1: Write the proportion equation
431,410,307.99 : 646,088,267.36 = 275,481,128.39 : x - Step 2: Convert to fraction form
431,410,307.99/646,088,267.36 = 275,481,128.39/x - Step 3: Cross multiply
431,410,307.99x = 646,088,267.36 × 275,481,128.39 - Step 4: Simplify right side
431,410,307.99x = 177,985,124,929,325,568 - Step 5: Solve for x
x = 177,985,124,929,325,568/431,410,307.99 - Step 6: Final answer
x = 412,565,767.75
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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.