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Finding the Fourth Proportional to 659,456.39, 988,667.82 and 260,395.88

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Solution

The fourth proportional to 659,456.39, 988,667.82 and 260,395.88 is: 390,389.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,456.39 : 988,667.82 = 260,395.88 : x
  2. Step 2: Convert to fraction form
    659,456.39/988,667.82 = 260,395.88/x
  3. Step 3: Cross multiply
    659,456.39x = 988,667.82 × 260,395.88
  4. Step 4: Simplify right side
    659,456.39x = 257,445,022,073.24
  5. Step 5: Solve for x
    x = 257,445,022,073.24/659,456.39
  6. Step 6: Final answer
    x = 390,389.76

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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.