Home / 685,067.10-1,027,503.45-211,800.30

Finding the Fourth Proportional to 685,067.10, 1,027,503.45 and 211,800.30

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Solution

The fourth proportional to 685,067.10, 1,027,503.45 and 211,800.30 is: 317,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,067.10 : 1,027,503.45 = 211,800.30 : x
  2. Step 2: Convert to fraction form
    685,067.10/1,027,503.45 = 211,800.30/x
  3. Step 3: Cross multiply
    685,067.10x = 1,027,503.45 × 211,800.30
  4. Step 4: Simplify right side
    685,067.10x = 217,625,538,961.04
  5. Step 5: Solve for x
    x = 217,625,538,961.04/685,067.10
  6. Step 6: Final answer
    x = 317,670.40

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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.