Home / 419,535.78-579,001.20-256,183.28

Finding the Fourth Proportional to 419,535.78, 579,001.20 and 256,183.28

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Solution

The fourth proportional to 419,535.78, 579,001.20 and 256,183.28 is: 353,558.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,535.78 : 579,001.20 = 256,183.28 : x
  2. Step 2: Convert to fraction form
    419,535.78/579,001.20 = 256,183.28/x
  3. Step 3: Cross multiply
    419,535.78x = 579,001.20 × 256,183.28
  4. Step 4: Simplify right side
    419,535.78x = 148,330,427,026.75
  5. Step 5: Solve for x
    x = 148,330,427,026.75/419,535.78
  6. Step 6: Final answer
    x = 353,558.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.