Home / 1,209,876.38-1,815,087.97-400,258.89

Finding the Fourth Proportional to 1,209,876.38, 1,815,087.97 and 400,258.89

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Solution

The fourth proportional to 1,209,876.38, 1,815,087.97 and 400,258.89 is: 600,478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,209,876.38 : 1,815,087.97 = 400,258.89 : x
  2. Step 2: Convert to fraction form
    1,209,876.38/1,815,087.97 = 400,258.89/x
  3. Step 3: Cross multiply
    1,209,876.38x = 1,815,087.97 × 400,258.89
  4. Step 4: Simplify right side
    1,209,876.38x = 726,505,096,124.55
  5. Step 5: Solve for x
    x = 726,505,096,124.55/1,209,876.38
  6. Step 6: Final answer
    x = 600,478.79

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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.