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Finding the Fourth Proportional to 888,361, 1,225,938.18 and 485,961.64

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Solution

The fourth proportional to 888,361, 1,225,938.18 and 485,961.64 is: 670,627.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,361 : 1,225,938.18 = 485,961.64 : x
  2. Step 2: Convert to fraction form
    888,361/1,225,938.18 = 485,961.64/x
  3. Step 3: Cross multiply
    888,361x = 1,225,938.18 × 485,961.64
  4. Step 4: Simplify right side
    888,361x = 595,758,928,491.42
  5. Step 5: Solve for x
    x = 595,758,928,491.42/888,361
  6. Step 6: Final answer
    x = 670,627.06

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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.