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Finding the Fourth Proportional to 629,676.12, 868,953.36 and 357,744.48

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Solution

The fourth proportional to 629,676.12, 868,953.36 and 357,744.48 is: 493,687.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,676.12 : 868,953.36 = 357,744.48 : x
  2. Step 2: Convert to fraction form
    629,676.12/868,953.36 = 357,744.48/x
  3. Step 3: Cross multiply
    629,676.12x = 868,953.36 × 357,744.48
  4. Step 4: Simplify right side
    629,676.12x = 310,863,267,917.45
  5. Step 5: Solve for x
    x = 310,863,267,917.45/629,676.12
  6. Step 6: Final answer
    x = 493,687.56

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1.5x scale

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.