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Finding the Fourth Proportional to 640,481.58, 959,945.54 and 470,425.05

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Solution

The fourth proportional to 640,481.58, 959,945.54 and 470,425.05 is: 705,067.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,481.58 : 959,945.54 = 470,425.05 : x
  2. Step 2: Convert to fraction form
    640,481.58/959,945.54 = 470,425.05/x
  3. Step 3: Cross multiply
    640,481.58x = 959,945.54 × 470,425.05
  4. Step 4: Simplify right side
    640,481.58x = 451,582,426,299.65
  5. Step 5: Solve for x
    x = 451,582,426,299.65/640,481.58
  6. Step 6: Final answer
    x = 705,067.00

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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.