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Finding the Fourth Proportional to 512,810.20, 769,215.30 and 483,285.70

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Solution

The fourth proportional to 512,810.20, 769,215.30 and 483,285.70 is: 724,928.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,810.20 : 769,215.30 = 483,285.70 : x
  2. Step 2: Convert to fraction form
    512,810.20/769,215.30 = 483,285.70/x
  3. Step 3: Cross multiply
    512,810.20x = 769,215.30 × 483,285.70
  4. Step 4: Simplify right side
    512,810.20x = 371,750,754,711.21
  5. Step 5: Solve for x
    x = 371,750,754,711.21/512,810.20
  6. Step 6: Final answer
    x = 724,928.55

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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.