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Finding the Fourth Proportional to 325,859.40, 488,789.10 and 320,610.60

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Solution

The fourth proportional to 325,859.40, 488,789.10 and 320,610.60 is: 480,915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,859.40 : 488,789.10 = 320,610.60 : x
  2. Step 2: Convert to fraction form
    325,859.40/488,789.10 = 320,610.60/x
  3. Step 3: Cross multiply
    325,859.40x = 488,789.10 × 320,610.60
  4. Step 4: Simplify right side
    325,859.40x = 156,710,966,624.46
  5. Step 5: Solve for x
    x = 156,710,966,624.46/325,859.40
  6. Step 6: Final answer
    x = 480,915.90

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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.