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Finding the Fourth Proportional to 637,908, 956,862 and 263,940.72

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Solution

The fourth proportional to 637,908, 956,862 and 263,940.72 is: 395,911.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,908 : 956,862 = 263,940.72 : x
  2. Step 2: Convert to fraction form
    637,908/956,862 = 263,940.72/x
  3. Step 3: Cross multiply
    637,908x = 956,862 × 263,940.72
  4. Step 4: Simplify right side
    637,908x = 252,554,845,220.64
  5. Step 5: Solve for x
    x = 252,554,845,220.64/637,908
  6. Step 6: Final answer
    x = 395,911.08

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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.