Home / 427,973.41-641,958.58-128,452.69

Finding the Fourth Proportional to 427,973.41, 641,958.58 and 128,452.69

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Solution

The fourth proportional to 427,973.41, 641,958.58 and 128,452.69 is: 192,678.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,973.41 : 641,958.58 = 128,452.69 : x
  2. Step 2: Convert to fraction form
    427,973.41/641,958.58 = 128,452.69/x
  3. Step 3: Cross multiply
    427,973.41x = 641,958.58 × 128,452.69
  4. Step 4: Simplify right side
    427,973.41x = 82,461,306,469.58
  5. Step 5: Solve for x
    x = 82,461,306,469.58/427,973.41
  6. Step 6: Final answer
    x = 192,678.57

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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.