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Finding the Fourth Proportional to 631,638.44, 871,624.32 and 345,160.88

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Solution

The fourth proportional to 631,638.44, 871,624.32 and 345,160.88 is: 476,301.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,638.44 : 871,624.32 = 345,160.88 : x
  2. Step 2: Convert to fraction form
    631,638.44/871,624.32 = 345,160.88/x
  3. Step 3: Cross multiply
    631,638.44x = 871,624.32 × 345,160.88
  4. Step 4: Simplify right side
    631,638.44x = 300,850,617,320.60
  5. Step 5: Solve for x
    x = 300,850,617,320.60/631,638.44
  6. Step 6: Final answer
    x = 476,301.94

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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.