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Finding the Fourth Proportional to 659,450.08, 988,658.38 and 260,389.56

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Solution

The fourth proportional to 659,450.08, 988,658.38 and 260,389.56 is: 390,380.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,450.08 : 988,658.38 = 260,389.56 : x
  2. Step 2: Convert to fraction form
    659,450.08/988,658.38 = 260,389.56/x
  3. Step 3: Cross multiply
    659,450.08x = 988,658.38 × 260,389.56
  4. Step 4: Simplify right side
    659,450.08x = 257,436,320,346.18
  5. Step 5: Solve for x
    x = 257,436,320,346.18/659,450.08
  6. Step 6: Final answer
    x = 390,380.30

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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.