Home / 645,949.20-968,923.80-616,918.80

Finding the Fourth Proportional to 645,949.20, 968,923.80 and 616,918.80

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Solution

The fourth proportional to 645,949.20, 968,923.80 and 616,918.80 is: 925,378.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,949.20 : 968,923.80 = 616,918.80 : x
  2. Step 2: Convert to fraction form
    645,949.20/968,923.80 = 616,918.80/x
  3. Step 3: Cross multiply
    645,949.20x = 968,923.80 × 616,918.80
  4. Step 4: Simplify right side
    645,949.20x = 597,747,307,987.44
  5. Step 5: Solve for x
    x = 597,747,307,987.44/645,949.20
  6. Step 6: Final answer
    x = 925,378.20

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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.