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Finding the Fourth Proportional to 521,562.10, 782,861.55 and 255,622.90

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Solution

The fourth proportional to 521,562.10, 782,861.55 and 255,622.90 is: 383,688.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,562.10 : 782,861.55 = 255,622.90 : x
  2. Step 2: Convert to fraction form
    521,562.10/782,861.55 = 255,622.90/x
  3. Step 3: Cross multiply
    521,562.10x = 782,861.55 × 255,622.90
  4. Step 4: Simplify right side
    521,562.10x = 200,117,339,709.50
  5. Step 5: Solve for x
    x = 200,117,339,709.50/521,562.10
  6. Step 6: Final answer
    x = 383,688.42

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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.