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Finding the Fourth Proportional to 509,905.30, 765,149.55 and 352,246.90

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Solution

The fourth proportional to 509,905.30, 765,149.55 and 352,246.90 is: 528,571.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,905.30 : 765,149.55 = 352,246.90 : x
  2. Step 2: Convert to fraction form
    509,905.30/765,149.55 = 352,246.90/x
  3. Step 3: Cross multiply
    509,905.30x = 765,149.55 × 352,246.90
  4. Step 4: Simplify right side
    509,905.30x = 269,521,557,023.90
  5. Step 5: Solve for x
    x = 269,521,557,023.90/509,905.30
  6. Step 6: Final answer
    x = 528,571.79

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1.5x scale

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.