Home / 743,971.38-1,115,789.40-211,480.62

Finding the Fourth Proportional to 743,971.38, 1,115,789.40 and 211,480.62

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Solution

The fourth proportional to 743,971.38, 1,115,789.40 and 211,480.62 is: 317,173.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,971.38 : 1,115,789.40 = 211,480.62 : x
  2. Step 2: Convert to fraction form
    743,971.38/1,115,789.40 = 211,480.62/x
  3. Step 3: Cross multiply
    743,971.38x = 1,115,789.40 × 211,480.62
  4. Step 4: Simplify right side
    743,971.38x = 235,967,834,101.43
  5. Step 5: Solve for x
    x = 235,967,834,101.43/743,971.38
  6. Step 6: Final answer
    x = 317,173.27

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1.5x scale

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.