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Finding the Fourth Proportional to 619,960.14, 855,544.54 and 348,028.56

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Solution

The fourth proportional to 619,960.14, 855,544.54 and 348,028.56 is: 480,279.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,960.14 : 855,544.54 = 348,028.56 : x
  2. Step 2: Convert to fraction form
    619,960.14/855,544.54 = 348,028.56/x
  3. Step 3: Cross multiply
    619,960.14x = 855,544.54 × 348,028.56
  4. Step 4: Simplify right side
    619,960.14x = 297,753,934,272.06
  5. Step 5: Solve for x
    x = 297,753,934,272.06/619,960.14
  6. Step 6: Final answer
    x = 480,279.16

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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.