Home / 690,905.78-1,036,358.67-269,886.41

Finding the Fourth Proportional to 690,905.78, 1,036,358.67 and 269,886.41

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Solution

The fourth proportional to 690,905.78, 1,036,358.67 and 269,886.41 is: 404,829.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,905.78 : 1,036,358.67 = 269,886.41 : x
  2. Step 2: Convert to fraction form
    690,905.78/1,036,358.67 = 269,886.41/x
  3. Step 3: Cross multiply
    690,905.78x = 1,036,358.67 × 269,886.41
  4. Step 4: Simplify right side
    690,905.78x = 279,699,120,918.68
  5. Step 5: Solve for x
    x = 279,699,120,918.68/690,905.78
  6. Step 6: Final answer
    x = 404,829.62

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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.