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Finding the Fourth Proportional to 633,870.15, 874,735.79 and 347,389.55

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Solution

The fourth proportional to 633,870.15, 874,735.79 and 347,389.55 is: 479,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,870.15 : 874,735.79 = 347,389.55 : x
  2. Step 2: Convert to fraction form
    633,870.15/874,735.79 = 347,389.55/x
  3. Step 3: Cross multiply
    633,870.15x = 874,735.79 × 347,389.55
  4. Step 4: Simplify right side
    633,870.15x = 303,874,072,906.89
  5. Step 5: Solve for x
    x = 303,874,072,906.89/633,870.15
  6. Step 6: Final answer
    x = 479,394.83

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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.