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Finding the Fourth Proportional to 521,857.20, 782,202.60 and 297,325.20

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Solution

The fourth proportional to 521,857.20, 782,202.60 and 297,325.20 is: 445,655.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,857.20 : 782,202.60 = 297,325.20 : x
  2. Step 2: Convert to fraction form
    521,857.20/782,202.60 = 297,325.20/x
  3. Step 3: Cross multiply
    521,857.20x = 782,202.60 × 297,325.20
  4. Step 4: Simplify right side
    521,857.20x = 232,568,544,485.52
  5. Step 5: Solve for x
    x = 232,568,544,485.52/521,857.20
  6. Step 6: Final answer
    x = 445,655.53

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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.