Home / 423,971.37-636,021.60-263,917.80

Finding the Fourth Proportional to 423,971.37, 636,021.60 and 263,917.80

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Solution

The fourth proportional to 423,971.37, 636,021.60 and 263,917.80 is: 395,916.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,971.37 : 636,021.60 = 263,917.80 : x
  2. Step 2: Convert to fraction form
    423,971.37/636,021.60 = 263,917.80/x
  3. Step 3: Cross multiply
    423,971.37x = 636,021.60 × 263,917.80
  4. Step 4: Simplify right side
    423,971.37x = 167,857,421,424.48
  5. Step 5: Solve for x
    x = 167,857,421,424.48/423,971.37
  6. Step 6: Final answer
    x = 395,916.88

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1.5x scale

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.