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Finding the Fourth Proportional to 637,910, 956,865 and 263,942.72

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Solution

The fourth proportional to 637,910, 956,865 and 263,942.72 is: 395,914.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,910 : 956,865 = 263,942.72 : x
  2. Step 2: Convert to fraction form
    637,910/956,865 = 263,942.72/x
  3. Step 3: Cross multiply
    637,910x = 956,865 × 263,942.72
  4. Step 4: Simplify right side
    637,910x = 252,557,550,772.80
  5. Step 5: Solve for x
    x = 252,557,550,772.80/637,910
  6. Step 6: Final answer
    x = 395,914.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.