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Finding the Fourth Proportional to 437,620.20, 656,430.30 and 327,028.20

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Solution

The fourth proportional to 437,620.20, 656,430.30 and 327,028.20 is: 490,542.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,620.20 : 656,430.30 = 327,028.20 : x
  2. Step 2: Convert to fraction form
    437,620.20/656,430.30 = 327,028.20/x
  3. Step 3: Cross multiply
    437,620.20x = 656,430.30 × 327,028.20
  4. Step 4: Simplify right side
    437,620.20x = 214,671,219,434.46
  5. Step 5: Solve for x
    x = 214,671,219,434.46/437,620.20
  6. Step 6: Final answer
    x = 490,542.30

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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.