Home / 512,981.10-769,470.84-139,004.10

Finding the Fourth Proportional to 512,981.10, 769,470.84 and 139,004.10

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Solution

The fourth proportional to 512,981.10, 769,470.84 and 139,004.10 is: 208,505.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,981.10 : 769,470.84 = 139,004.10 : x
  2. Step 2: Convert to fraction form
    512,981.10/769,470.84 = 139,004.10/x
  3. Step 3: Cross multiply
    512,981.10x = 769,470.84 × 139,004.10
  4. Step 4: Simplify right side
    512,981.10x = 106,959,601,590.44
  5. Step 5: Solve for x
    x = 106,959,601,590.44/512,981.10
  6. Step 6: Final answer
    x = 208,505.93

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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.