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Finding the Fourth Proportional to 659,449.24, 988,657.11 and 260,388.72

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Solution

The fourth proportional to 659,449.24, 988,657.11 and 260,388.72 is: 390,379.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,449.24 : 988,657.11 = 260,388.72 : x
  2. Step 2: Convert to fraction form
    659,449.24/988,657.11 = 260,388.72/x
  3. Step 3: Cross multiply
    659,449.24x = 988,657.11 × 260,388.72
  4. Step 4: Simplify right side
    659,449.24x = 257,435,156,611.20
  5. Step 5: Solve for x
    x = 257,435,156,611.20/659,449.24
  6. Step 6: Final answer
    x = 390,379.03

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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.