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Finding the Fourth Proportional to 656,288.94, 987,978.78 and 590,299.86

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Solution

The fourth proportional to 656,288.94, 987,978.78 and 590,299.86 is: 888,638.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,288.94 : 987,978.78 = 590,299.86 : x
  2. Step 2: Convert to fraction form
    656,288.94/987,978.78 = 590,299.86/x
  3. Step 3: Cross multiply
    656,288.94x = 987,978.78 × 590,299.86
  4. Step 4: Simplify right side
    656,288.94x = 583,203,735,516.97
  5. Step 5: Solve for x
    x = 583,203,735,516.97/656,288.94
  6. Step 6: Final answer
    x = 888,638.68

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.