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Finding the Fourth Proportional to 500,562.72, 690,607.44 and 285,551.52

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Solution

The fourth proportional to 500,562.72, 690,607.44 and 285,551.52 is: 393,964.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,562.72 : 690,607.44 = 285,551.52 : x
  2. Step 2: Convert to fraction form
    500,562.72/690,607.44 = 285,551.52/x
  3. Step 3: Cross multiply
    500,562.72x = 690,607.44 × 285,551.52
  4. Step 4: Simplify right side
    500,562.72x = 197,204,004,215.31
  5. Step 5: Solve for x
    x = 197,204,004,215.31/500,562.72
  6. Step 6: Final answer
    x = 393,964.62

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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.