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Finding the Fourth Proportional to 509,923.20, 764,884.80 and 454,810.80

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Solution

The fourth proportional to 509,923.20, 764,884.80 and 454,810.80 is: 682,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,923.20 : 764,884.80 = 454,810.80 : x
  2. Step 2: Convert to fraction form
    509,923.20/764,884.80 = 454,810.80/x
  3. Step 3: Cross multiply
    509,923.20x = 764,884.80 × 454,810.80
  4. Step 4: Simplify right side
    509,923.20x = 347,877,867,795.84
  5. Step 5: Solve for x
    x = 347,877,867,795.84/509,923.20
  6. Step 6: Final answer
    x = 682,216.20

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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.