Home / 645,189.30-967,980.78-329,867.64

Finding the Fourth Proportional to 645,189.30, 967,980.78 and 329,867.64

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Solution

The fourth proportional to 645,189.30, 967,980.78 and 329,867.64 is: 494,902.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,189.30 : 967,980.78 = 329,867.64 : x
  2. Step 2: Convert to fraction form
    645,189.30/967,980.78 = 329,867.64/x
  3. Step 3: Cross multiply
    645,189.30x = 967,980.78 × 329,867.64
  4. Step 4: Simplify right side
    645,189.30x = 319,305,535,463.96
  5. Step 5: Solve for x
    x = 319,305,535,463.96/645,189.30
  6. Step 6: Final answer
    x = 494,902.09

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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.