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Finding the Fourth Proportional to 871,864.56, 1,307,761.00 and 303,375.78

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Solution

The fourth proportional to 871,864.56, 1,307,761.00 and 303,375.78 is: 455,051.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,864.56 : 1,307,761.00 = 303,375.78 : x
  2. Step 2: Convert to fraction form
    871,864.56/1,307,761.00 = 303,375.78/x
  3. Step 3: Cross multiply
    871,864.56x = 1,307,761.00 × 303,375.78
  4. Step 4: Simplify right side
    871,864.56x = 396,743,012,670.14
  5. Step 5: Solve for x
    x = 396,743,012,670.14/871,864.56
  6. Step 6: Final answer
    x = 455,051.20

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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.