Home / 919,340.40-1,379,010.60-635,905.20

Finding the Fourth Proportional to 919,340.40, 1,379,010.60 and 635,905.20

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Solution

The fourth proportional to 919,340.40, 1,379,010.60 and 635,905.20 is: 953,857.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,340.40 : 1,379,010.60 = 635,905.20 : x
  2. Step 2: Convert to fraction form
    919,340.40/1,379,010.60 = 635,905.20/x
  3. Step 3: Cross multiply
    919,340.40x = 1,379,010.60 × 635,905.20
  4. Step 4: Simplify right side
    919,340.40x = 876,920,011,395.12
  5. Step 5: Solve for x
    x = 876,920,011,395.12/919,340.40
  6. Step 6: Final answer
    x = 953,857.80

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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.