Home / 646,844.20-970,842.30-380,271.40

Finding the Fourth Proportional to 646,844.20, 970,842.30 and 380,271.40

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Solution

The fourth proportional to 646,844.20, 970,842.30 and 380,271.40 is: 570,745.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,844.20 : 970,842.30 = 380,271.40 : x
  2. Step 2: Convert to fraction form
    646,844.20/970,842.30 = 380,271.40/x
  3. Step 3: Cross multiply
    646,844.20x = 970,842.30 × 380,271.40
  4. Step 4: Simplify right side
    646,844.20x = 369,183,560,600.22
  5. Step 5: Solve for x
    x = 369,183,560,600.22/646,844.20
  6. Step 6: Final answer
    x = 570,745.72

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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.