Home / 919,904.20-1,379,856.30-245,984.20

Finding the Fourth Proportional to 919,904.20, 1,379,856.30 and 245,984.20

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Solution

The fourth proportional to 919,904.20, 1,379,856.30 and 245,984.20 is: 368,976.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,904.20 : 1,379,856.30 = 245,984.20 : x
  2. Step 2: Convert to fraction form
    919,904.20/1,379,856.30 = 245,984.20/x
  3. Step 3: Cross multiply
    919,904.20x = 1,379,856.30 × 245,984.20
  4. Step 4: Simplify right side
    919,904.20x = 339,422,848,070.46
  5. Step 5: Solve for x
    x = 339,422,848,070.46/919,904.20
  6. Step 6: Final answer
    x = 368,976.30

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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.