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Finding the Fourth Proportional to 621,650.18, 857,796.54 and 349,708.88

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Solution

The fourth proportional to 621,650.18, 857,796.54 and 349,708.88 is: 482,552.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,650.18 : 857,796.54 = 349,708.88 : x
  2. Step 2: Convert to fraction form
    621,650.18/857,796.54 = 349,708.88/x
  3. Step 3: Cross multiply
    621,650.18x = 857,796.54 × 349,708.88
  4. Step 4: Simplify right side
    621,650.18x = 299,979,067,271.28
  5. Step 5: Solve for x
    x = 299,979,067,271.28/621,650.18
  6. Step 6: Final answer
    x = 482,552.85

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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.