Home / 645,938.20-968,907.30-616,907.80

Finding the Fourth Proportional to 645,938.20, 968,907.30 and 616,907.80

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Solution

The fourth proportional to 645,938.20, 968,907.30 and 616,907.80 is: 925,361.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,938.20 : 968,907.30 = 616,907.80 : x
  2. Step 2: Convert to fraction form
    645,938.20/968,907.30 = 616,907.80/x
  3. Step 3: Cross multiply
    645,938.20x = 968,907.30 × 616,907.80
  4. Step 4: Simplify right side
    645,938.20x = 597,726,470,846.94
  5. Step 5: Solve for x
    x = 597,726,470,846.94/645,938.20
  6. Step 6: Final answer
    x = 925,361.70

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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.