Home / 639,402.56-882,362.08-349,004.56

Finding the Fourth Proportional to 639,402.56, 882,362.08 and 349,004.56

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Solution

The fourth proportional to 639,402.56, 882,362.08 and 349,004.56 is: 481,618.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,402.56 : 882,362.08 = 349,004.56 : x
  2. Step 2: Convert to fraction form
    639,402.56/882,362.08 = 349,004.56/x
  3. Step 3: Cross multiply
    639,402.56x = 882,362.08 × 349,004.56
  4. Step 4: Simplify right side
    639,402.56x = 307,948,389,491.09
  5. Step 5: Solve for x
    x = 307,948,389,491.09/639,402.56
  6. Step 6: Final answer
    x = 481,618.95

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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.