Home / 645,491.20-968,107.20-308,531.20

Finding the Fourth Proportional to 645,491.20, 968,107.20 and 308,531.20

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Solution

The fourth proportional to 645,491.20, 968,107.20 and 308,531.20 is: 462,734.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,491.20 : 968,107.20 = 308,531.20 : x
  2. Step 2: Convert to fraction form
    645,491.20/968,107.20 = 308,531.20/x
  3. Step 3: Cross multiply
    645,491.20x = 968,107.20 × 308,531.20
  4. Step 4: Simplify right side
    645,491.20x = 298,691,276,144.64
  5. Step 5: Solve for x
    x = 298,691,276,144.64/645,491.20
  6. Step 6: Final answer
    x = 462,734.85

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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.