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Finding the Fourth Proportional to 509,596.40, 764,394.60 and 130,516.40

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Solution

The fourth proportional to 509,596.40, 764,394.60 and 130,516.40 is: 195,774.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,596.40 : 764,394.60 = 130,516.40 : x
  2. Step 2: Convert to fraction form
    509,596.40/764,394.60 = 130,516.40/x
  3. Step 3: Cross multiply
    509,596.40x = 764,394.60 × 130,516.40
  4. Step 4: Simplify right side
    509,596.40x = 99,766,031,371.44
  5. Step 5: Solve for x
    x = 99,766,031,371.44/509,596.40
  6. Step 6: Final answer
    x = 195,774.60

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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.