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Finding the Fourth Proportional to 800,007.60, 1,201,393.80 and 426,759.60

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Solution

The fourth proportional to 800,007.60, 1,201,393.80 and 426,759.60 is: 640,876.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,007.60 : 1,201,393.80 = 426,759.60 : x
  2. Step 2: Convert to fraction form
    800,007.60/1,201,393.80 = 426,759.60/x
  3. Step 3: Cross multiply
    800,007.60x = 1,201,393.80 × 426,759.60
  4. Step 4: Simplify right side
    800,007.60x = 512,706,337,530.48
  5. Step 5: Solve for x
    x = 512,706,337,530.48/800,007.60
  6. Step 6: Final answer
    x = 640,876.83

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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.