Home / 663,976.90-996,216.99-397,928.35

Finding the Fourth Proportional to 663,976.90, 996,216.99 and 397,928.35

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Solution

The fourth proportional to 663,976.90, 996,216.99 and 397,928.35 is: 597,043.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,976.90 : 996,216.99 = 397,928.35 : x
  2. Step 2: Convert to fraction form
    663,976.90/996,216.99 = 397,928.35/x
  3. Step 3: Cross multiply
    663,976.90x = 996,216.99 × 397,928.35
  4. Step 4: Simplify right side
    663,976.90x = 396,422,983,072.67
  5. Step 5: Solve for x
    x = 396,422,983,072.67/663,976.90
  6. Step 6: Final answer
    x = 597,043.34

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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.