Home / 485,036.78-669,262.05-270,171.38

Finding the Fourth Proportional to 485,036.78, 669,262.05 and 270,171.38

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Solution

The fourth proportional to 485,036.78, 669,262.05 and 270,171.38 is: 372,787.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,036.78 : 669,262.05 = 270,171.38 : x
  2. Step 2: Convert to fraction form
    485,036.78/669,262.05 = 270,171.38/x
  3. Step 3: Cross multiply
    485,036.78x = 669,262.05 × 270,171.38
  4. Step 4: Simplify right side
    485,036.78x = 180,815,451,630.13
  5. Step 5: Solve for x
    x = 180,815,451,630.13/485,036.78
  6. Step 6: Final answer
    x = 372,787.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.