Home / 1,438,507.03-2,155,956.25-762,920.86

Finding the Fourth Proportional to 1,438,507.03, 2,155,956.25 and 762,920.86

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Solution

The fourth proportional to 1,438,507.03, 2,155,956.25 and 762,920.86 is: 1,143,424.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,507.03 : 2,155,956.25 = 762,920.86 : x
  2. Step 2: Convert to fraction form
    1,438,507.03/2,155,956.25 = 762,920.86/x
  3. Step 3: Cross multiply
    1,438,507.03x = 2,155,956.25 × 762,920.86
  4. Step 4: Simplify right side
    1,438,507.03x = 1,644,823,996,372.38
  5. Step 5: Solve for x
    x = 1,644,823,996,372.38/1,438,507.03
  6. Step 6: Final answer
    x = 1,143,424.37

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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.