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Finding the Fourth Proportional to 571,834.56, 789,135.48 and 317,190

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Solution

The fourth proportional to 571,834.56, 789,135.48 and 317,190 is: 437,724.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,834.56 : 789,135.48 = 317,190 : x
  2. Step 2: Convert to fraction form
    571,834.56/789,135.48 = 317,190/x
  3. Step 3: Cross multiply
    571,834.56x = 789,135.48 × 317,190
  4. Step 4: Simplify right side
    571,834.56x = 250,305,882,901.20
  5. Step 5: Solve for x
    x = 250,305,882,901.20/571,834.56
  6. Step 6: Final answer
    x = 437,724.30

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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.