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Finding the Fourth Proportional to 517,899.60, 775,683 and 265,257.36

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Solution

The fourth proportional to 517,899.60, 775,683 and 265,257.36 is: 397,288.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,899.60 : 775,683 = 265,257.36 : x
  2. Step 2: Convert to fraction form
    517,899.60/775,683 = 265,257.36/x
  3. Step 3: Cross multiply
    517,899.60x = 775,683 × 265,257.36
  4. Step 4: Simplify right side
    517,899.60x = 205,755,624,776.88
  5. Step 5: Solve for x
    x = 205,755,624,776.88/517,899.60
  6. Step 6: Final answer
    x = 397,288.63

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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.