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Finding the Fourth Proportional to 633,905.40, 874,785.42 and 347,443.32

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Solution

The fourth proportional to 633,905.40, 874,785.42 and 347,443.32 is: 479,469.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,905.40 : 874,785.42 = 347,443.32 : x
  2. Step 2: Convert to fraction form
    633,905.40/874,785.42 = 347,443.32/x
  3. Step 3: Cross multiply
    633,905.40x = 874,785.42 × 347,443.32
  4. Step 4: Simplify right side
    633,905.40x = 303,938,350,612.39
  5. Step 5: Solve for x
    x = 303,938,350,612.39/633,905.40
  6. Step 6: Final answer
    x = 479,469.57

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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.