Home / 521,392.03-782,383.91-281,502.74

Finding the Fourth Proportional to 521,392.03, 782,383.91 and 281,502.74

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Solution

The fourth proportional to 521,392.03, 782,383.91 and 281,502.74 is: 422,413.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,392.03 : 782,383.91 = 281,502.74 : x
  2. Step 2: Convert to fraction form
    521,392.03/782,383.91 = 281,502.74/x
  3. Step 3: Cross multiply
    521,392.03x = 782,383.91 × 281,502.74
  4. Step 4: Simplify right side
    521,392.03x = 220,243,214,396.91
  5. Step 5: Solve for x
    x = 220,243,214,396.91/521,392.03
  6. Step 6: Final answer
    x = 422,413.85

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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.