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Finding the Fourth Proportional to 659,506.47, 988,595.10 and 259,992.60

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Solution

The fourth proportional to 659,506.47, 988,595.10 and 259,992.60 is: 389,726.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,506.47 : 988,595.10 = 259,992.60 : x
  2. Step 2: Convert to fraction form
    659,506.47/988,595.10 = 259,992.60/x
  3. Step 3: Cross multiply
    659,506.47x = 988,595.10 × 259,992.60
  4. Step 4: Simplify right side
    659,506.47x = 257,027,410,396.26
  5. Step 5: Solve for x
    x = 257,027,410,396.26/659,506.47
  6. Step 6: Final answer
    x = 389,726.90

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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.