Home / 751,905.10-1,128,153.03-330,885.73

Finding the Fourth Proportional to 751,905.10, 1,128,153.03 and 330,885.73

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Solution

The fourth proportional to 751,905.10, 1,128,153.03 and 330,885.73 is: 496,458.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,905.10 : 1,128,153.03 = 330,885.73 : x
  2. Step 2: Convert to fraction form
    751,905.10/1,128,153.03 = 330,885.73/x
  3. Step 3: Cross multiply
    751,905.10x = 1,128,153.03 × 330,885.73
  4. Step 4: Simplify right side
    751,905.10x = 373,289,738,883.26
  5. Step 5: Solve for x
    x = 373,289,738,883.26/751,905.10
  6. Step 6: Final answer
    x = 496,458.58

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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.