Home / 639,103.46-882,282.38-397,463.90

Finding the Fourth Proportional to 639,103.46, 882,282.38 and 397,463.90

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Solution

The fourth proportional to 639,103.46, 882,282.38 and 397,463.90 is: 548,698.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,103.46 : 882,282.38 = 397,463.90 : x
  2. Step 2: Convert to fraction form
    639,103.46/882,282.38 = 397,463.90/x
  3. Step 3: Cross multiply
    639,103.46x = 882,282.38 × 397,463.90
  4. Step 4: Simplify right side
    639,103.46x = 350,675,389,257.35
  5. Step 5: Solve for x
    x = 350,675,389,257.35/639,103.46
  6. Step 6: Final answer
    x = 548,698.94

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1.5x scale

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.