Home / 443,811.40-664,404.90-396,572.20

Finding the Fourth Proportional to 443,811.40, 664,404.90 and 396,572.20

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Solution

The fourth proportional to 443,811.40, 664,404.90 and 396,572.20 is: 593,685.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,811.40 : 664,404.90 = 396,572.20 : x
  2. Step 2: Convert to fraction form
    443,811.40/664,404.90 = 396,572.20/x
  3. Step 3: Cross multiply
    443,811.40x = 664,404.90 × 396,572.20
  4. Step 4: Simplify right side
    443,811.40x = 263,484,512,883.78
  5. Step 5: Solve for x
    x = 263,484,512,883.78/443,811.40
  6. Step 6: Final answer
    x = 593,685.77

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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.