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Finding the Fourth Proportional to 658,637.69, 988,288.52 and 259,564.86

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Solution

The fourth proportional to 658,637.69, 988,288.52 and 259,564.86 is: 389,478.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,637.69 : 988,288.52 = 259,564.86 : x
  2. Step 2: Convert to fraction form
    658,637.69/988,288.52 = 259,564.86/x
  3. Step 3: Cross multiply
    658,637.69x = 988,288.52 × 259,564.86
  4. Step 4: Simplify right side
    658,637.69x = 256,524,970,035.58
  5. Step 5: Solve for x
    x = 256,524,970,035.58/658,637.69
  6. Step 6: Final answer
    x = 389,478.12

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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.