Home / 681,103.20-939,735.36-474,139.65

Finding the Fourth Proportional to 681,103.20, 939,735.36 and 474,139.65

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Solution

The fourth proportional to 681,103.20, 939,735.36 and 474,139.65 is: 654,182.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,103.20 : 939,735.36 = 474,139.65 : x
  2. Step 2: Convert to fraction form
    681,103.20/939,735.36 = 474,139.65/x
  3. Step 3: Cross multiply
    681,103.20x = 939,735.36 × 474,139.65
  4. Step 4: Simplify right side
    681,103.20x = 445,565,794,683.02
  5. Step 5: Solve for x
    x = 445,565,794,683.02/681,103.20
  6. Step 6: Final answer
    x = 654,182.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.