Home / 509,927.10-764,963.55-172,983.30

Finding the Fourth Proportional to 509,927.10, 764,963.55 and 172,983.30

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Solution

The fourth proportional to 509,927.10, 764,963.55 and 172,983.30 is: 259,499.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,927.10 : 764,963.55 = 172,983.30 : x
  2. Step 2: Convert to fraction form
    509,927.10/764,963.55 = 172,983.30/x
  3. Step 3: Cross multiply
    509,927.10x = 764,963.55 × 172,983.30
  4. Step 4: Simplify right side
    509,927.10x = 132,325,919,258.72
  5. Step 5: Solve for x
    x = 132,325,919,258.72/509,927.10
  6. Step 6: Final answer
    x = 259,499.68

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Double scale
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Similar ratio
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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.