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Finding the Fourth Proportional to 404,427.20, 607,807.20 and 353,105.60

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Solution

The fourth proportional to 404,427.20, 607,807.20 and 353,105.60 is: 530,676.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,427.20 : 607,807.20 = 353,105.60 : x
  2. Step 2: Convert to fraction form
    404,427.20/607,807.20 = 353,105.60/x
  3. Step 3: Cross multiply
    404,427.20x = 607,807.20 × 353,105.60
  4. Step 4: Simplify right side
    404,427.20x = 214,620,126,040.32
  5. Step 5: Solve for x
    x = 214,620,126,040.32/404,427.20
  6. Step 6: Final answer
    x = 530,676.78

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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.