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Finding the Fourth Proportional to 511,904.40, 768,439.80 and 301,660.80

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Solution

The fourth proportional to 511,904.40, 768,439.80 and 301,660.80 is: 452,834.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,904.40 : 768,439.80 = 301,660.80 : x
  2. Step 2: Convert to fraction form
    511,904.40/768,439.80 = 301,660.80/x
  3. Step 3: Cross multiply
    511,904.40x = 768,439.80 × 301,660.80
  4. Step 4: Simplify right side
    511,904.40x = 231,808,164,819.84
  5. Step 5: Solve for x
    x = 231,808,164,819.84/511,904.40
  6. Step 6: Final answer
    x = 452,834.87

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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.