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Finding the Fourth Proportional to 580,821.17, 871,455.11 and 281,278.71

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Solution

The fourth proportional to 580,821.17, 871,455.11 and 281,278.71 is: 422,026.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,821.17 : 871,455.11 = 281,278.71 : x
  2. Step 2: Convert to fraction form
    580,821.17/871,455.11 = 281,278.71/x
  3. Step 3: Cross multiply
    580,821.17x = 871,455.11 × 281,278.71
  4. Step 4: Simplify right side
    580,821.17x = 245,121,767,757.32
  5. Step 5: Solve for x
    x = 245,121,767,757.32/580,821.17
  6. Step 6: Final answer
    x = 422,026.23

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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.