Home / 639,519.47-882,538.78-349,131.49

Finding the Fourth Proportional to 639,519.47, 882,538.78 and 349,131.49

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Solution

The fourth proportional to 639,519.47, 882,538.78 and 349,131.49 is: 481,802.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,519.47 : 882,538.78 = 349,131.49 : x
  2. Step 2: Convert to fraction form
    639,519.47/882,538.78 = 349,131.49/x
  3. Step 3: Cross multiply
    639,519.47x = 882,538.78 × 349,131.49
  4. Step 4: Simplify right side
    639,519.47x = 308,122,079,244.18
  5. Step 5: Solve for x
    x = 308,122,079,244.18/639,519.47
  6. Step 6: Final answer
    x = 481,802.50

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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.