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Finding the Fourth Proportional to 621,494.64, 857,175.36 and 425,377.36

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Solution

The fourth proportional to 621,494.64, 857,175.36 and 425,377.36 is: 586,687.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,494.64 : 857,175.36 = 425,377.36 : x
  2. Step 2: Convert to fraction form
    621,494.64/857,175.36 = 425,377.36/x
  3. Step 3: Cross multiply
    621,494.64x = 857,175.36 × 425,377.36
  4. Step 4: Simplify right side
    621,494.64x = 364,622,991,693.85
  5. Step 5: Solve for x
    x = 364,622,991,693.85/621,494.64
  6. Step 6: Final answer
    x = 586,687.27

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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.