Home / 812,872.32-1,121,604.48-510,891.84

Finding the Fourth Proportional to 812,872.32, 1,121,604.48 and 510,891.84

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Solution

The fourth proportional to 812,872.32, 1,121,604.48 and 510,891.84 is: 704,930.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,872.32 : 1,121,604.48 = 510,891.84 : x
  2. Step 2: Convert to fraction form
    812,872.32/1,121,604.48 = 510,891.84/x
  3. Step 3: Cross multiply
    812,872.32x = 1,121,604.48 × 510,891.84
  4. Step 4: Simplify right side
    812,872.32x = 573,018,576,539.44
  5. Step 5: Solve for x
    x = 573,018,576,539.44/812,872.32
  6. Step 6: Final answer
    x = 704,930.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.