Home / 521,622.51-782,551.01-281,731.29

Finding the Fourth Proportional to 521,622.51, 782,551.01 and 281,731.29

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Solution

The fourth proportional to 521,622.51, 782,551.01 and 281,731.29 is: 422,660.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,622.51 : 782,551.01 = 281,731.29 : x
  2. Step 2: Convert to fraction form
    521,622.51/782,551.01 = 281,731.29/x
  3. Step 3: Cross multiply
    521,622.51x = 782,551.01 × 281,731.29
  4. Step 4: Simplify right side
    521,622.51x = 220,469,105,538.10
  5. Step 5: Solve for x
    x = 220,469,105,538.10/521,622.51
  6. Step 6: Final answer
    x = 422,660.26

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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.