Home / 814,343.85-1,221,992.06-340,989.57

Finding the Fourth Proportional to 814,343.85, 1,221,992.06 and 340,989.57

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Solution

The fourth proportional to 814,343.85, 1,221,992.06 and 340,989.57 is: 511,683.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,343.85 : 1,221,992.06 = 340,989.57 : x
  2. Step 2: Convert to fraction form
    814,343.85/1,221,992.06 = 340,989.57/x
  3. Step 3: Cross multiply
    814,343.85x = 1,221,992.06 × 340,989.57
  4. Step 4: Simplify right side
    814,343.85x = 416,686,545,377.87
  5. Step 5: Solve for x
    x = 416,686,545,377.87/814,343.85
  6. Step 6: Final answer
    x = 511,683.79

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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.