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Finding the Fourth Proportional to 570,939.60, 855,246.78 and 270,509.52

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Solution

The fourth proportional to 570,939.60, 855,246.78 and 270,509.52 is: 405,213.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,939.60 : 855,246.78 = 270,509.52 : x
  2. Step 2: Convert to fraction form
    570,939.60/855,246.78 = 270,509.52/x
  3. Step 3: Cross multiply
    570,939.60x = 855,246.78 × 270,509.52
  4. Step 4: Simplify right side
    570,939.60x = 231,352,395,939.35
  5. Step 5: Solve for x
    x = 231,352,395,939.35/570,939.60
  6. Step 6: Final answer
    x = 405,213.43

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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.