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Finding the Fourth Proportional to 446,256.78, 669,408.54 and 339,807.69

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Solution

The fourth proportional to 446,256.78, 669,408.54 and 339,807.69 is: 509,729.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,256.78 : 669,408.54 = 339,807.69 : x
  2. Step 2: Convert to fraction form
    446,256.78/669,408.54 = 339,807.69/x
  3. Step 3: Cross multiply
    446,256.78x = 669,408.54 × 339,807.69
  4. Step 4: Simplify right side
    446,256.78x = 227,470,171,236.52
  5. Step 5: Solve for x
    x = 227,470,171,236.52/446,256.78
  6. Step 6: Final answer
    x = 509,729.34

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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.