Home / 426,918.38-640,283.25-123,246.54

Finding the Fourth Proportional to 426,918.38, 640,283.25 and 123,246.54

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Solution

The fourth proportional to 426,918.38, 640,283.25 and 123,246.54 is: 184,842.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,918.38 : 640,283.25 = 123,246.54 : x
  2. Step 2: Convert to fraction form
    426,918.38/640,283.25 = 123,246.54/x
  3. Step 3: Cross multiply
    426,918.38x = 640,283.25 × 123,246.54
  4. Step 4: Simplify right side
    426,918.38x = 78,912,697,098.80
  5. Step 5: Solve for x
    x = 78,912,697,098.80/426,918.38
  6. Step 6: Final answer
    x = 184,842.59

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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.