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Finding the Fourth Proportional to 633,961.38, 874,888.38 and 347,481.40

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Solution

The fourth proportional to 633,961.38, 874,888.38 and 347,481.40 is: 479,536.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,961.38 : 874,888.38 = 347,481.40 : x
  2. Step 2: Convert to fraction form
    633,961.38/874,888.38 = 347,481.40/x
  3. Step 3: Cross multiply
    633,961.38x = 874,888.38 × 347,481.40
  4. Step 4: Simplify right side
    633,961.38x = 304,007,439,126.13
  5. Step 5: Solve for x
    x = 304,007,439,126.13/633,961.38
  6. Step 6: Final answer
    x = 479,536.21

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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.