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Finding the Fourth Proportional to 659,523.60, 988,556.40 and 260,031.60

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Solution

The fourth proportional to 659,523.60, 988,556.40 and 260,031.60 is: 389,759.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,523.60 : 988,556.40 = 260,031.60 : x
  2. Step 2: Convert to fraction form
    659,523.60/988,556.40 = 260,031.60/x
  3. Step 3: Cross multiply
    659,523.60x = 988,556.40 × 260,031.60
  4. Step 4: Simplify right side
    659,523.60x = 257,055,902,382.24
  5. Step 5: Solve for x
    x = 257,055,902,382.24/659,523.60
  6. Step 6: Final answer
    x = 389,759.98

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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.