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Finding the Fourth Proportional to 871,246.72, 1,306,040.64 and 279,856

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Solution

The fourth proportional to 871,246.72, 1,306,040.64 and 279,856 is: 419,517.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,246.72 : 1,306,040.64 = 279,856 : x
  2. Step 2: Convert to fraction form
    871,246.72/1,306,040.64 = 279,856/x
  3. Step 3: Cross multiply
    871,246.72x = 1,306,040.64 × 279,856
  4. Step 4: Simplify right side
    871,246.72x = 365,503,309,347.84
  5. Step 5: Solve for x
    x = 365,503,309,347.84/871,246.72
  6. Step 6: Final answer
    x = 419,517.57

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.