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Finding the Fourth Proportional to 571,860.57, 789,262.20 and 317,293.77

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Solution

The fourth proportional to 571,860.57, 789,262.20 and 317,293.77 is: 437,917.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,860.57 : 789,262.20 = 317,293.77 : x
  2. Step 2: Convert to fraction form
    571,860.57/789,262.20 = 317,293.77/x
  3. Step 3: Cross multiply
    571,860.57x = 789,262.20 × 317,293.77
  4. Step 4: Simplify right side
    571,860.57x = 250,427,978,956.49
  5. Step 5: Solve for x
    x = 250,427,978,956.49/571,860.57
  6. Step 6: Final answer
    x = 437,917.90

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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.