Home / 487,833-731,745.40-381,306.56

Finding the Fourth Proportional to 487,833, 731,745.40 and 381,306.56

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Solution

The fourth proportional to 487,833, 731,745.40 and 381,306.56 is: 571,956.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,833 : 731,745.40 = 381,306.56 : x
  2. Step 2: Convert to fraction form
    487,833/731,745.40 = 381,306.56/x
  3. Step 3: Cross multiply
    487,833x = 731,745.40 × 381,306.56
  4. Step 4: Simplify right side
    487,833x = 279,019,321,269.82
  5. Step 5: Solve for x
    x = 279,019,321,269.82/487,833
  6. Step 6: Final answer
    x = 571,956.64

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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.