Home / 439,912.20-659,868.30-329,320.20

Finding the Fourth Proportional to 439,912.20, 659,868.30 and 329,320.20

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Solution

The fourth proportional to 439,912.20, 659,868.30 and 329,320.20 is: 493,980.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,912.20 : 659,868.30 = 329,320.20 : x
  2. Step 2: Convert to fraction form
    439,912.20/659,868.30 = 329,320.20/x
  3. Step 3: Cross multiply
    439,912.20x = 659,868.30 × 329,320.20
  4. Step 4: Simplify right side
    439,912.20x = 217,307,960,529.66
  5. Step 5: Solve for x
    x = 217,307,960,529.66/439,912.20
  6. Step 6: Final answer
    x = 493,980.30

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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.