Home / 500,398.12-690,535.94-285,534.28

Finding the Fourth Proportional to 500,398.12, 690,535.94 and 285,534.28

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Solution

The fourth proportional to 500,398.12, 690,535.94 and 285,534.28 is: 394,029.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,398.12 : 690,535.94 = 285,534.28 : x
  2. Step 2: Convert to fraction form
    500,398.12/690,535.94 = 285,534.28/x
  3. Step 3: Cross multiply
    500,398.12x = 690,535.94 × 285,534.28
  4. Step 4: Simplify right side
    500,398.12x = 197,171,682,442.02
  5. Step 5: Solve for x
    x = 197,171,682,442.02/500,398.12
  6. Step 6: Final answer
    x = 394,029.62

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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.