Home / 509,498.58-764,255.20-193,972.80

Finding the Fourth Proportional to 509,498.58, 764,255.20 and 193,972.80

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Solution

The fourth proportional to 509,498.58, 764,255.20 and 193,972.80 is: 290,961.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,498.58 : 764,255.20 = 193,972.80 : x
  2. Step 2: Convert to fraction form
    509,498.58/764,255.20 = 193,972.80/x
  3. Step 3: Cross multiply
    509,498.58x = 764,255.20 × 193,972.80
  4. Step 4: Simplify right side
    509,498.58x = 148,244,721,058.56
  5. Step 5: Solve for x
    x = 148,244,721,058.56/509,498.58
  6. Step 6: Final answer
    x = 290,961.99

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Double scale
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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.