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Finding the Fourth Proportional to 619,304.20, 854,636.22 and 343,659.28

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Solution

The fourth proportional to 619,304.20, 854,636.22 and 343,659.28 is: 474,247.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,304.20 : 854,636.22 = 343,659.28 : x
  2. Step 2: Convert to fraction form
    619,304.20/854,636.22 = 343,659.28/x
  3. Step 3: Cross multiply
    619,304.20x = 854,636.22 × 343,659.28
  4. Step 4: Simplify right side
    619,304.20x = 293,703,668,027.12
  5. Step 5: Solve for x
    x = 293,703,668,027.12/619,304.20
  6. Step 6: Final answer
    x = 474,247.82

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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.