Home / 521,399.12-782,394.57-281,509.83

Finding the Fourth Proportional to 521,399.12, 782,394.57 and 281,509.83

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Solution

The fourth proportional to 521,399.12, 782,394.57 and 281,509.83 is: 422,424.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,399.12 : 782,394.57 = 281,509.83 : x
  2. Step 2: Convert to fraction form
    521,399.12/782,394.57 = 281,509.83/x
  3. Step 3: Cross multiply
    521,399.12x = 782,394.57 × 281,509.83
  4. Step 4: Simplify right side
    521,399.12x = 220,251,762,393.62
  5. Step 5: Solve for x
    x = 220,251,762,393.62/521,399.12
  6. Step 6: Final answer
    x = 422,424.50

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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.