Home / 811,671.31-1,120,107.72-449,110.45

Finding the Fourth Proportional to 811,671.31, 1,120,107.72 and 449,110.45

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Solution

The fourth proportional to 811,671.31, 1,120,107.72 and 449,110.45 is: 619,773.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,671.31 : 1,120,107.72 = 449,110.45 : x
  2. Step 2: Convert to fraction form
    811,671.31/1,120,107.72 = 449,110.45/x
  3. Step 3: Cross multiply
    811,671.31x = 1,120,107.72 × 449,110.45
  4. Step 4: Simplify right side
    811,671.31x = 503,052,082,177.67
  5. Step 5: Solve for x
    x = 503,052,082,177.67/811,671.31
  6. Step 6: Final answer
    x = 619,773.15

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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.