Home / 811,849.20-1,120,354.07-449,298.06

Finding the Fourth Proportional to 811,849.20, 1,120,354.07 and 449,298.06

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Solution

The fourth proportional to 811,849.20, 1,120,354.07 and 449,298.06 is: 620,032.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,849.20 : 1,120,354.07 = 449,298.06 : x
  2. Step 2: Convert to fraction form
    811,849.20/1,120,354.07 = 449,298.06/x
  3. Step 3: Cross multiply
    811,849.20x = 1,120,354.07 × 449,298.06
  4. Step 4: Simplify right side
    811,849.20x = 503,372,907,917.61
  5. Step 5: Solve for x
    x = 503,372,907,917.61/811,849.20
  6. Step 6: Final answer
    x = 620,032.52

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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.