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Finding the Fourth Proportional to 664,467.30, 996,700.95 and 379,865.70

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Solution

The fourth proportional to 664,467.30, 996,700.95 and 379,865.70 is: 569,798.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,467.30 : 996,700.95 = 379,865.70 : x
  2. Step 2: Convert to fraction form
    664,467.30/996,700.95 = 379,865.70/x
  3. Step 3: Cross multiply
    664,467.30x = 996,700.95 × 379,865.70
  4. Step 4: Simplify right side
    664,467.30x = 378,612,504,062.42
  5. Step 5: Solve for x
    x = 378,612,504,062.42/664,467.30
  6. Step 6: Final answer
    x = 569,798.55

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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.