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Finding the Fourth Proportional to 686,721.72, 1,029,797.46 and 265,755

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Solution

The fourth proportional to 686,721.72, 1,029,797.46 and 265,755 is: 398,522.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,721.72 : 1,029,797.46 = 265,755 : x
  2. Step 2: Convert to fraction form
    686,721.72/1,029,797.46 = 265,755/x
  3. Step 3: Cross multiply
    686,721.72x = 1,029,797.46 × 265,755
  4. Step 4: Simplify right side
    686,721.72x = 273,673,823,982.30
  5. Step 5: Solve for x
    x = 273,673,823,982.30/686,721.72
  6. Step 6: Final answer
    x = 398,522.16

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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.