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Finding the Fourth Proportional to 519,889.90, 779,834.85 and 519,889.90

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Solution

The fourth proportional to 519,889.90, 779,834.85 and 519,889.90 is: 779,834.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,889.90 : 779,834.85 = 519,889.90 : x
  2. Step 2: Convert to fraction form
    519,889.90/779,834.85 = 519,889.90/x
  3. Step 3: Cross multiply
    519,889.90x = 779,834.85 × 519,889.90
  4. Step 4: Simplify right side
    519,889.90x = 405,428,262,183.02
  5. Step 5: Solve for x
    x = 405,428,262,183.02/519,889.90
  6. Step 6: Final answer
    x = 779,834.85

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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.