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Finding the Fourth Proportional to 659,494.47, 988,577.10 and 259,980.60

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Solution

The fourth proportional to 659,494.47, 988,577.10 and 259,980.60 is: 389,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,494.47 : 988,577.10 = 259,980.60 : x
  2. Step 2: Convert to fraction form
    659,494.47/988,577.10 = 259,980.60/x
  3. Step 3: Cross multiply
    659,494.47x = 988,577.10 × 259,980.60
  4. Step 4: Simplify right side
    659,494.47x = 257,010,867,604.26
  5. Step 5: Solve for x
    x = 257,010,867,604.26/659,494.47
  6. Step 6: Final answer
    x = 389,708.90

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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.