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Finding the Fourth Proportional to 519,724, 779,586 and 125,740

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Solution

The fourth proportional to 519,724, 779,586 and 125,740 is: 188,610

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,724 : 779,586 = 125,740 : x
  2. Step 2: Convert to fraction form
    519,724/779,586 = 125,740/x
  3. Step 3: Cross multiply
    519,724x = 779,586 × 125,740
  4. Step 4: Simplify right side
    519,724x = 98,025,143,640
  5. Step 5: Solve for x
    x = 98,025,143,640/519,724
  6. Step 6: Final answer
    x = 188,610

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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.