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Finding the Fourth Proportional to 871,650.78, 1,306,727.28 and 302,958.03

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Solution

The fourth proportional to 871,650.78, 1,306,727.28 and 302,958.03 is: 454,176.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,650.78 : 1,306,727.28 = 302,958.03 : x
  2. Step 2: Convert to fraction form
    871,650.78/1,306,727.28 = 302,958.03/x
  3. Step 3: Cross multiply
    871,650.78x = 1,306,727.28 × 302,958.03
  4. Step 4: Simplify right side
    871,650.78x = 395,883,526,260.19
  5. Step 5: Solve for x
    x = 395,883,526,260.19/871,650.78
  6. Step 6: Final answer
    x = 454,176.76

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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.