Home / 742,676.73-1,024,933.55-420,458.73

Finding the Fourth Proportional to 742,676.73, 1,024,933.55 and 420,458.73

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Solution

The fourth proportional to 742,676.73, 1,024,933.55 and 420,458.73 is: 580,255.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,676.73 : 1,024,933.55 = 420,458.73 : x
  2. Step 2: Convert to fraction form
    742,676.73/1,024,933.55 = 420,458.73/x
  3. Step 3: Cross multiply
    742,676.73x = 1,024,933.55 × 420,458.73
  4. Step 4: Simplify right side
    742,676.73x = 430,942,256,665.10
  5. Step 5: Solve for x
    x = 430,942,256,665.10/742,676.73
  6. Step 6: Final answer
    x = 580,255.50

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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.