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Finding the Fourth Proportional to 641,215.20, 960,510.60 and 325,849.80

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Solution

The fourth proportional to 641,215.20, 960,510.60 and 325,849.80 is: 488,107.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,215.20 : 960,510.60 = 325,849.80 : x
  2. Step 2: Convert to fraction form
    641,215.20/960,510.60 = 325,849.80/x
  3. Step 3: Cross multiply
    641,215.20x = 960,510.60 × 325,849.80
  4. Step 4: Simplify right side
    641,215.20x = 312,982,186,907.88
  5. Step 5: Solve for x
    x = 312,982,186,907.88/641,215.20
  6. Step 6: Final answer
    x = 488,107.87

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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.