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Finding the Fourth Proportional to 483,172.80, 724,759.20 and 430,028.70

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Solution

The fourth proportional to 483,172.80, 724,759.20 and 430,028.70 is: 645,043.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,172.80 : 724,759.20 = 430,028.70 : x
  2. Step 2: Convert to fraction form
    483,172.80/724,759.20 = 430,028.70/x
  3. Step 3: Cross multiply
    483,172.80x = 724,759.20 × 430,028.70
  4. Step 4: Simplify right side
    483,172.80x = 311,667,256,589.04
  5. Step 5: Solve for x
    x = 311,667,256,589.04/483,172.80
  6. Step 6: Final answer
    x = 645,043.05

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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.