Home / 639,321.88-882,266.07-348,936.12

Finding the Fourth Proportional to 639,321.88, 882,266.07 and 348,936.12

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Solution

The fourth proportional to 639,321.88, 882,266.07 and 348,936.12 is: 481,532.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,321.88 : 882,266.07 = 348,936.12 : x
  2. Step 2: Convert to fraction form
    639,321.88/882,266.07 = 348,936.12/x
  3. Step 3: Cross multiply
    639,321.88x = 882,266.07 × 348,936.12
  4. Step 4: Simplify right side
    639,321.88x = 307,854,499,273.45
  5. Step 5: Solve for x
    x = 307,854,499,273.45/639,321.88
  6. Step 6: Final answer
    x = 481,532.87

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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.