Home / 645,901.20-968,736.60-408,819.60

Finding the Fourth Proportional to 645,901.20, 968,736.60 and 408,819.60

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Solution

The fourth proportional to 645,901.20, 968,736.60 and 408,819.60 is: 613,156.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,901.20 : 968,736.60 = 408,819.60 : x
  2. Step 2: Convert to fraction form
    645,901.20/968,736.60 = 408,819.60/x
  3. Step 3: Cross multiply
    645,901.20x = 968,736.60 × 408,819.60
  4. Step 4: Simplify right side
    645,901.20x = 396,038,509,317.36
  5. Step 5: Solve for x
    x = 396,038,509,317.36/645,901.20
  6. Step 6: Final answer
    x = 613,156.48

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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.