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Finding the Fourth Proportional to 659,960.89, 910,759.67 and 373,480.90

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Solution

The fourth proportional to 659,960.89, 910,759.67 and 373,480.90 is: 515,411.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,960.89 : 910,759.67 = 373,480.90 : x
  2. Step 2: Convert to fraction form
    659,960.89/910,759.67 = 373,480.90/x
  3. Step 3: Cross multiply
    659,960.89x = 910,759.67 × 373,480.90
  4. Step 4: Simplify right side
    659,960.89x = 340,151,339,367.90
  5. Step 5: Solve for x
    x = 340,151,339,367.90/659,960.89
  6. Step 6: Final answer
    x = 515,411.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.