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Finding the Fourth Proportional to 509,626.40, 764,439.60 and 360,035.60

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Solution

The fourth proportional to 509,626.40, 764,439.60 and 360,035.60 is: 540,053.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,626.40 : 764,439.60 = 360,035.60 : x
  2. Step 2: Convert to fraction form
    509,626.40/764,439.60 = 360,035.60/x
  3. Step 3: Cross multiply
    509,626.40x = 764,439.60 × 360,035.60
  4. Step 4: Simplify right side
    509,626.40x = 275,225,470,049.76
  5. Step 5: Solve for x
    x = 275,225,470,049.76/509,626.40
  6. Step 6: Final answer
    x = 540,053.40

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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.