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Finding the Fourth Proportional to 580,619.91, 871,215.21 and 260,997.59

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Solution

The fourth proportional to 580,619.91, 871,215.21 and 260,997.59 is: 391,624.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,619.91 : 871,215.21 = 260,997.59 : x
  2. Step 2: Convert to fraction form
    580,619.91/871,215.21 = 260,997.59/x
  3. Step 3: Cross multiply
    580,619.91x = 871,215.21 × 260,997.59
  4. Step 4: Simplify right side
    580,619.91x = 227,385,072,359.38
  5. Step 5: Solve for x
    x = 227,385,072,359.38/580,619.91
  6. Step 6: Final answer
    x = 391,624.65

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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.